Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ebd599c0e2b9e9e…

MALICIOUS

PDF

84.8 KB Created: 2021-06-06 18:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 800af77772c0e6e53407f233f10ae072 SHA-1: cdf9ee4dc478ab1fe5d02a26a4648914b8c5dc67 SHA-256: 5ebd599c0e2b9e9e6673b051291c24cf409531d1a80d8d5de1eb57d6e7c16ceb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://allytemp.ru/pbw?utm_term=super+smash+flash+2+beta+1.2.1.1+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470964/normal_6064a65d84415.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445877/normal_603b6e6993b8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421224/normal_60228e3c7623b.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/7749927.pdfIn PDF document text
    • https://kixodebu.weebly.com/uploads/1/3/2/6/132682063/gizogof.pdfIn PDF document text
    • https://dewubolisevibe.weebly.com/uploads/1/3/4/3/134318954/5eb0b8703.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401540/normal_6002007b97cbf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472775/normal_5ffde4ded7f94.pdfIn PDF document text
    • https://lexobazotukagof.weebly.com/uploads/1/3/1/4/131407042/gavejiguwi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477910/normal_5fe3f6dac0090.pdfIn PDF document text
    • https://tagekoworiz.weebly.com/uploads/1/3/4/0/134016686/juxusile-juluduzali-fekigujujoke-fikajexagi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450243/normal_5fe15d878de03.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jutifakukap.pbworks.com/w/file/fetch/144731925/28516446729.pdfIn PDF document text
    • http://zuguwar.pbworks.com/f/88388970237.pdfIn PDF document text
    • http://mukibilevejo.pbworks.com/f/gibozalirum.pdfIn PDF document text
    • http://sagidetubi.pbworks.com/f/cambridge_pet_sample_test.pdfIn PDF document text
    • http://minuwaxiper.pbworks.com/f/kibeladapawurebomovusid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/516dd3c8-9f24-4880-a750-8d171f915ead/big_mouth_and_ugly_girl_summary_chapter_43.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fab48a4b-7b14-4cb8-8bd9-9b342b30754b/56406619574.pdfIn PDF document text
    • http://wejojixi.pbworks.com/w/file/fetch/144423549/disisinelilugenagen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96e0a06c-f3ba-4e95-8672-534e9c305486/caused_by_java.lang.outofmemoryerror_permgen_space_intellij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c4d4a4c-1b3b-4305-b006-01b065e79789/what_does_guerrilla_warfare_means_in_hindi.pdfIn PDF document text
    • http://supatibu.pbworks.com/f/74332497289.pdfIn PDF document text
    • http://xojifot.pbworks.com/w/file/fetch/144423648/61272907969.pdfIn PDF document text
    • http://subazim.pbworks.com/w/file/fetch/144565416/makro_gym_equipment_catalogue.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE2 5832 bytes
SHA-256: 23997cab203a0b6adda2773666f7c38e1134c1a4bae34a8f4ee082a8b090c369
font_01_sfnt_off00011ea1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA1 11868 bytes
SHA-256: c5b5e58aa9b9c40c9cd69ca5070f5f15d717301238adb62672acb2000d7565a1

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