Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee806cee4d331372…

MALICIOUS

PDF

75.9 KB Created: 2021-03-18 10:33:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b1fd3851f71b86118414bec9bb3d5439 SHA-1: 92c3a638c89c88086e88bfdf7a45d4e0bb36af00 SHA-256: ee806cee4d3313721fcb0d8f3470f072b5381220b4d9d3358bf875223cf2f748
146 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 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.
  • 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://druttle.ru/strik?utm_term=what+are+the+different+types+of+iphone+chargers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467561/normal_6043e94e6330e.pdfIn PDF document text
    • http://sodahq.club/andrew_loomis_booksw9aid.pdfIn PDF document text
    • http://biletiposa.22web.org/30739011819.pdfIn PDF document text
    • http://info-pages.ru/dyson_dc16_filter_cleaningi2fa9.pdfIn PDF document text
    • http://trylait.club/92785942897brjok.pdfIn PDF document text
    • http://mokugujumekov.sportsontheweb.net/kumon_5th_grade_math_worksheets.pdfIn PDF document text
    • http://help-verification.com/what_are_two_disadvantages_of_laser_printersw2k6l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450883/normal_603be8659667c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378623/normal_6050d568cde56.pdfIn PDF document text
    • http://veviwumifuvemuz.mypressonline.com/aircraft_wing_structure_parts.pdfIn PDF document text
    • https://dapemoko.weebly.com/uploads/1/3/4/6/134647299/250730564709.pdfIn PDF document text
    • https://tumuzisokume.weebly.com/uploads/1/3/5/3/135351536/5860051.pdfIn PDF document text
    • https://simepatu.weebly.com/uploads/1/3/4/2/134267103/1551919.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_601bee4520b53.pdfIn PDF document text
    • https://vinazova.weebly.com/uploads/1/3/2/6/132695356/megojalojugej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bugenuvumap.atwebpages.com/resignation_letter_sample_for_personal_reasons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02a81335-5b8e-422a-a098-c3b0019c9ac9/ripexifimigufenarixixaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6580262-5053-49e2-9df2-a4e4ef5e0bb9/burotaxamogixare.pdfIn PDF document text
    • http://zalowakudedakov.rf.gd/majanebobevubunemop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e2423fa-5d92-4190-bd98-ab283baea129/potaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3968f1e0-14e5-409e-a418-b57ba9cff97b/tissot_t-touch_solar_e84_user_manual.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_off0000e902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE902 5500 bytes
SHA-256: bbab604443c53cd6e3dddc5a8f1c6164a2b15cfb942718076dd192993ebb0f47
font_01_sfnt_off0000fbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCF 11264 bytes
SHA-256: 1704a98a544d506023a867a67d2d41dd95dc1d5ed3308006758ddd9a9d1e479d

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