Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa1e004a9951e03e…

MALICIOUS

PDF

84.9 KB Created: 2021-03-16 01:28:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 4eca0a65d4bb8da7e0012accabcbf996 SHA-1: 5dd34c7de866f07e9846b2fc7b610a54d6bf3183 SHA-256: aa1e004a9951e03eacba92159791c117d2e291116d60755c59c39d042b986280
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The presence of embedded URLs and the document's structure point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dugedepap.ru/wix?keyword=long+live+the+princess+guide+0.19 PDF link annotation
    • https://kesizibewasi.weebly.com/uploads/1/3/0/8/130813921/dojuko.pdfIn PDF document text
    • https://galibemad.weebly.com/uploads/1/3/1/8/131856827/56c96ce8d703.pdfIn PDF document text
    • https://zozilevijuni.weebly.com/uploads/1/3/1/3/131383476/dolatifaguzetak_wezukub.pdfIn PDF document text
    • https://sinukofulav.weebly.com/uploads/1/3/4/6/134634738/gikidalofokalo_xekadesifa_jikogado.pdfIn PDF document text
    • https://divowotekek.weebly.com/uploads/1/3/4/7/134759223/6949593.pdfIn PDF document text
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/b3ba2ff.pdfIn PDF document text
    • https://giwuvapelefawi.weebly.com/uploads/1/3/4/8/134869604/boxisades.pdfIn PDF document text
    • http://xiwesesakuvel.medianewsonline.com/14076673829.pdfIn PDF document text
    • https://gotenalonas.weebly.com/uploads/1/3/4/3/134372716/60766171.pdfIn PDF document text
    • http://vurovolapoza.mygamesonline.org/ledurirum.pdfIn PDF document text
    • https://didefitelov.weebly.com/uploads/1/3/0/8/130874246/nijaguxegaxulaposer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://9170d309-caca-4186-8987-bf6b40ce219c.filesusr.com/ugd/baef12_78fd0eebf78545958e863a2ad7e6a665.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/58d10bce-2089-406a-a1d0-735864316e9d/fexekew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f153d50-2036-43ab-8e05-81da64ac6900/52812027414.pdfIn PDF document text
    • http://sajomapujozokux.onlinewebshop.net/sagodisumu.pdfIn PDF document text
    • https://167c2301-eccc-4e3a-a609-38a4f17b9bf8.filesusr.com/ugd/b1dabf_cadd84ee53504004b26782c7e118ab33.pdf?index=trueIn PDF document text
    • https://a6bad622-5621-4a9f-aac1-1b9dbbd41194.filesusr.com/ugd/f9d4cd_7854ce21f640417896ed338b20ebb2eb.pdf?index=trueIn PDF document text
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_77c2dff8da214170b7a1fcf7b3e4d8bc.pdf?index=trueIn PDF document text
    • https://f8d4b294-f952-4a11-85e8-0a3036f9bdaf.filesusr.com/ugd/ad8f3a_e0ab2a1b07d74f8bae40b19920699d76.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/db30d482-1e50-43f4-96bc-89b1da80cf8c/how_to_turn_on_wps_on_pldt_router.pdfIn PDF document text
    • http://kawerulim.onlinewebshop.net/do_plants_need_cool_or_warm_humidifier.pdfIn PDF document text
    • https://9f349447-249b-4747-956a-316fe86e371b.filesusr.com/ugd/d2b720_1081a5408519494fa15399dbabed7453.pdf?index=trueIn PDF document text
    • https://03386fec-e341-46be-bf9f-2f2bd19f9bfe.filesusr.com/ugd/bf57b5_87e87c566ac044d79741714a8fd8cf3b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8de64048-a1d0-4dd1-9a10-0ef47267d142/myles_munroe_sermons_on_fasting.pdfIn PDF document text
    • https://48e4e0df-78ce-4736-8797-27735e68dc67.filesusr.com/ugd/f3b179_4313b29c58654c7289f53648a5979323.pdf?index=trueIn PDF document text
    • https://9e1e9198-0fe7-4103-8084-fdcc6befb8d5.filesusr.com/ugd/2f7815_3d7539f7f6a443b0bbda5277ed0e412e.pdf?index=trueIn PDF document text
    • https://1347de4c-4e54-429a-b84c-372e60bc5a2b.filesusr.com/ugd/6c98bc_19f05cc4cc8a45d2ae89e3d6bf6d43f0.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EC 5392 bytes
SHA-256: 4a2753027413ae5fc2195320c189d583c70784b8b35aa8d9d41dbe817e1cdaf8
font_01_sfnt_off0001084a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084A 2044 bytes
SHA-256: 9812099c5b295b859b411b79c63ef0f3e15cad7fffbe3efb0a8bc6b6c1165317
font_02_sfnt_off000111b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B7 11148 bytes
SHA-256: 4ac98ecbd57d2b5b34118e2143c5066a5dff945bd025d1b251e5434ea86ed0e8
font_03_sfnt_off00013766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13766 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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