Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc744d832da0ea8b…

MALICIOUS

PDF

78.4 KB Created: 2021-03-01 09:39:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b345304a04f2a4ceb9576c38cb9e5ecf SHA-1: be72a1f4e05313e5d240315b25a2bb485b7c4241 SHA-256: fc744d832da0ea8b382cb7be99605403554256579aa67b741649a9c6813ddd95
226 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF is identified as a credential phishing lure impersonating Gmail, directing users to a malicious PDF hosted on Weebly. The document also contains multiple links to disposable domains and is flagged as a link farm, suggesting it's part of a larger phishing infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving exploitation or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://sagejajake.weebly.com/uploads/1/3/5/3/135303377/lagakimab.pdf.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://druttle.ru/aws?utm_term=how+to+unlock+an+lg+rebel+4 PDF link annotation
    • http://lalat.space/what_is_a_different_word_for_sword_fightingydm08.pdfIn PDF document text
    • http://lnstagramcopyrighthelps.com/2033516906sj3pa.pdfIn PDF document text
    • http://uscarins.info/89817667559bzv07.pdfIn PDF document text
    • https://sagejajake.weebly.com/uploads/1/3/5/3/135303377/lagakimab.pdfIn PDF document text
    • http://getbuiss.online/59826885484plyo3.pdfIn PDF document text
    • http://nesobaka9.xyz/22502457946i1dft.pdfIn PDF document text
    • http://nizavevorupuj.mywebcommunity.org/how_to_update_tableau_license_key.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/zisomobafukale.pdfIn PDF document text
    • https://cdn.sqhk.co/netimupoxojo/gUJzjjL/bmobile_sim_card_purchase.pdfIn PDF document text
    • http://xonitaj.mywebcommunity.org/24193464777.pdfIn PDF document text
    • https://sisezapude.weebly.com/uploads/1/3/1/3/131398367/kibebitob-tojodo-xidetuvabiwa.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
    • https://s3.amazonaws.com/bolovopizonuki/switching_anticoagulants.pdfIn PDF document text
    • http://lakasixes.rf.gd/21537359047.pdfIn PDF document text
    • http://suwetiwojiza.rf.gd/biwitepijavuneno.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/72670437972.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/category_theory_for_scientists.pdfIn PDF document text
    • http://bogadamarixufa.epizy.com/41508275886.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e65e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65E 4968 bytes
SHA-256: 138f04c681d07d2b9d3ae8069aa5137b76c392aa16b67d7fb73799a8e59a69c0
font_01_sfnt_off0000f76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF76D 11592 bytes
SHA-256: 1f95120c87e13e4ea4822c3af7a1069d6a1f4d1f87f45d2a5557fa622399341d
font_02_sfnt_off00011e9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E9C 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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