Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66e9fd84492bd83…

MALICIOUS

PDF

78.6 KB Created: 2021-06-14 05:19:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 9a12d43572e7dacf262663712d1fe2d7 SHA-1: 9f703275fd921304ba798cf4c104dd79844452ad SHA-256: f66e9fd84492bd83ccfe1fbee4faf7bd411df1b441ba3f34f3fd9f05dcf1b533
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=tng+chain+of+command PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385410/normal_60624d6a93942.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484993/normal_5ff3ce41610ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457854/normal_605c1ae0324e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426816/normal_606df3e6a01ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492892/normal_606545f3d59f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477921/normal_603796af5e64b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409114/normal_6026100a7b33b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388825/normal_60bbda917fa96.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387825/normal_5feb028de0c15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407316/normal_5feec3a944706.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470412/normal_5fe7736cbde91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387427/normal_602179ae1bbaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484093/normal_5ffa6dfff0bce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389365/normal_5fe8fac7aa106.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445866/normal_5fea07ea3a7db.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4491155/normal_60b0010d17482.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fisagibop.pbworks.com/f/my_love_my_life_mp3_song_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2f908dd-6aa4-4fd8-afd6-11067b44c89e/the_blind_assassin_book_depository.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a02aadaf-9c94-45c0-a2f6-6137a4849ad9/nevusewawunonawu.pdfIn PDF document text
    • http://rupebaxo.pbworks.com/f/39646483644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dbd9281-9cf3-4f6c-b748-7d51e4a7170e/why_are_legal_terms_in_latin.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_off0000f7b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B2 5076 bytes
SHA-256: c1dab573eb27cde3207b2c5ae9e529644bf5bb099ecc2e6ab781939846a122c0
font_01_sfnt_off000108dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108DC 10636 bytes
SHA-256: 7bcffcfed35b46c357b8a56f7211fa5d1368b4008b94121db70f3eaef627b41b

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