Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9eec0b1a0092c5…

MALICIOUS

PDF

74.8 KB Created: 2021-04-03 22:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 5aafa3341032a85b930148b8690dafd4 SHA-1: 11db471e74a5e9fd5c2aec67ef24e3426e35dbb3 SHA-256: 6d9eec0b1a0092c5c31f779e7894ac2d3c730a355e5b66e023ed865cc45d7bc7
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics as a link farm designed for SEO manipulation. The ML classifier and ClamAV detection strongly indicate malicious intent, specifically phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • 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://bologen.ru/123?utm_term=absolute+power+full+movie+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368493/normal_5fc9bba647cb0.pdfIn PDF document text
    • http://wgathering.org/apple_ipod_classic_user_guide03892.pdfIn PDF document text
    • http://stassikorskyi.com/driver_hp_deskjet_6940_para_windows_10bjpg0.pdfIn PDF document text
    • http://dvestideyli.xyz/dnd_5e_critical_hit_buildcy4d8.pdfIn PDF document text
    • http://my-favshop.online/57928974294s4up7.pdfIn PDF document text
    • http://kapusta.pro/how_do_you_use_formative_assessments_in_the_classroomdpven.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381988/normal_605dd19698759.pdfIn PDF document text
    • http://gladkoe-telo.xyz/lokotasxtb9u.pdfIn PDF document text
    • http://fineagencyy.com/control_systems_engineering_cse_pe_exam_review_coursefnrs2.pdfIn PDF document text
    • http://prizinsta.info/what_is_an_example_of_a_narrativei2p4t.pdfIn PDF document text
    • http://yildirimotobursa.com/linkin_park_2020_newsjhhd2.pdfIn PDF document text
    • http://rkconstructionsucks.com/gopoxunuvimidakisiludkcj9x.pdfIn PDF document text
    • http://prizinsta365.online/34978200129lzbth.pdfIn PDF document text
    • http://beautysss.site/new_top_100_ringtones_2018ztia7.pdfIn PDF document text
    • http://matteset-spon.space/71778677735ux6mz.pdfIn PDF document text
    • http://my-credit.info/sadelakepibaborwtv9p.pdfIn PDF document text
    • http://opensol.xyz/club_car_golf_cart_battery_chargerdl53q.pdfIn PDF document text
    • http://fherixq.com/the_theory_of_moral_sentiments_google_books4vdlt.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/rufonali/terraform_assume_role_cross_account.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/covalent_bonding_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/wigixezulujumeroluloros.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/tusupigopabavu.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/what_are_the_seven_primary_characteristics_of_organizational_culture.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_off0000d926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD926 4892 bytes
SHA-256: 0443daf6d959ff87f72037cd4129b0471407cea435291b397b6910315a45b453
font_01_sfnt_off0000e9e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E1 10924 bytes
SHA-256: b61ad980e1b12e1ce6d6369abecfe54a0b10f80c1174064e93ad0c809aa490a7
font_02_sfnt_off00010f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F46 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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