Malicious PDF — malware analysis report

Static analysis result for SHA-256 32916045811fb18e…

MALICIOUS

PDF

94.7 KB Created: 2021-04-05 20:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b78e27c1c698a95bd20db9641a50f0a5 SHA-1: b7e17a65997658a8b7a855b3a04c423f4a121ca2 SHA-256: 32916045811fb18e3f3116d9fdc81d3e6478d9533ff0f6c044060c49d3378eb9
126 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URIs, many pointing to disposable domains, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were extracted, the PDF structure itself facilitates the attack by hosting numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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 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://gimoguvi.ru/strik?utm_term=how+to+build+a+mob+farm+1.16.3 PDF link annotation
    • http://bestpriceforukraine.xyz/direct_cutover_strategymlabh.pdfIn PDF document text
    • http://nedipupuru.22web.org/65794906411.pdfIn PDF document text
    • https://nukarefu.weebly.com/uploads/1/3/4/1/134131348/rafunisimutam.pdfIn PDF document text
    • http://mignonette.space/996180168965rlga.pdfIn PDF document text
    • https://gapotijaj.weebly.com/uploads/1/3/1/3/131383657/pemikomiraweluz.pdfIn PDF document text
    • http://sushibara.net/my_t_mobile_uk_sign_inj75eh.pdfIn PDF document text
    • https://cdn.sqhk.co/teduwugevoki/fijrMib/fix_toilet_keeps_running_after_flushing.pdfIn PDF document text
    • http://rocketdocs.us/nuloximufuvotodaporerihoszn.pdfIn PDF document text
    • http://apparently-home.com/nintendo_64_rfu_adapter_not_workingpw4xz.pdfIn PDF document text
    • https://cdn.sqhk.co/vefomatakin/jjciabE/11154670820.pdfIn PDF document text
    • http://shishkin-seed.xyz/xumunid59837.pdfIn PDF document text
    • http://ledy66.net/how_to_read_a_depth_mapyskcr.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/77442735285maay0.pdfIn PDF document text
    • https://jijaxiwiruba.weebly.com/uploads/1/3/5/3/135333012/vawek-lasujafezesum-fukusudalamaje.pdfIn PDF document text
    • https://cdn.sqhk.co/kalusoxat/dgcjcl2/litovenagijuvafulip.pdfIn PDF document text
    • http://skidki-day.site/warupu5935j.pdfIn PDF document text
    • https://furuvisagibeveb.weebly.com/uploads/1/3/1/4/131453033/181ab29092.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
    • http://siraxaxadele.epizy.com/lg_inverter_direct_drive_washer_tub_clean_instructions.pdfIn PDF document text
    • http://zigixukotezu.epizy.com/nojoxiv.pdfIn PDF document text
    • http://luwanidali.rf.gd/16865233498.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/iceland_tourist_attractions_map.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/fopiwise.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/manual_j_calculation_spreadsheet.pdfIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000126d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126D0 5128 bytes
SHA-256: 1e489444ed67c6008f918160246008d3d9d3c518146b34d3ff9817cc1471f71d
font_01_sfnt_off00013857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13857 11416 bytes
SHA-256: 72ae3ed80bf8eef5e341f327a7d31b84e350b85c380e9dad270b726117d7b48c
font_02_sfnt_off00015f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F3A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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