Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ebee9a04e9f00f0…

MALICIOUS

PDF

81.3 KB Created: 2021-05-20 18:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6b1dd38fffb4d74d3ee1dc0c08c82ded SHA-1: 1c69fe48ffb8cea097e88f8f1fd502593c20cb4f SHA-256: 0ebee9a04e9f00f072bcbb75dcb247bafa8f534d970ac548ff288005f0971a0a
176 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. It uses a callback-phone (TOAD) lure. 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 0.9997

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://maypoin.ru/strik?utm_term=can+you+unlock+a+sprint+phone+to+any+carrier PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4496826/normal_6041a8a57c9cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388416/normal_604fd2817c1d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388169/normal_60357dce7d079.pdfIn PDF document text
    • https://degewobajobazim.weebly.com/uploads/1/3/5/3/135324790/sobupolaweba-kofijabixupeman-xawana.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367300/normal_605d8c1f2d8fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411944/normal_60320bea5e633.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454971/normal_601b11ad62953.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_603424d459419.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416305/normal_5ff82ad484e42.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368243/normal_5fdcbacaee3a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_6031459dd9fc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475580/normal_6031f94039dd9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/854f2a82-8d11-4176-b272-e42de8733655/kijasuvolubadoguxepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eb3d894-a89a-4495-b1b1-e137a530f3dc/2011_rav4_v6_oil_capacity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e202dab7-3861-4811-ae3d-dfe76eec0ffa/47845096839.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d82b73a-76e2-4ab9-9593-5ae0add9a970/how_to_calculate_tax_on_lic_maturity_amount.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc4b5ed7-fd86-4571-98b6-99f9ce9181f4/76241946960.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec630c72-dfde-420b-99fa-7ca1da85d288/laxelipiruvizilak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21c91589-9514-4ed8-958d-9a0a39f66469/jewuxirokosujoluwu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7e301d-cb55-4b60-8b70-57f0f71df4da/snow_white_and_the_huntsman_trailer_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9a3de20-56d4-4986-be46-3322ad0b1918/krups_grill_964_smokeless_grill.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_off0000ffd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFD6 5092 bytes
SHA-256: cdd5c5addf85c7cb279f3b3bad819382b564b846c6fb45f0989e0985ebd15b48
font_01_sfnt_off00011129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11129 10816 bytes
SHA-256: 494f2b16e8c265ebfb0d95e7f31a8432a0f8874a49a0c5523122fec8e85c1080

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