Malicious PDF — malware analysis report

Static analysis result for SHA-256 e012940fdb42988b…

MALICIOUS

PDF

78.5 KB Created: 2021-05-31 20:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2bdd8fddce4bd7a80cb8202aa9682864 SHA-1: 4da711d046c228119d0eee188a704e7a5a0515d8 SHA-256: e012940fdb42988b13e5238491d578991e2280f1a78c8002797885854b5d069d
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or redirection scheme, likely using embedded JavaScript for obfuscation or further redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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.
  • 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://pixomot.ru/pbw?utm_term=how+to+use+excel+for+daily+expenses PDF link annotation
    • https://xajasobuz.weebly.com/uploads/1/3/4/8/134861619/joguwufamarakukog.pdfIn PDF document text
    • https://nitowapesapu.weebly.com/uploads/1/3/4/4/134442046/pakulegumowodivaze.pdfIn PDF document text
    • https://xizotuvulozig.weebly.com/uploads/1/3/1/8/131856772/602726.pdfIn PDF document text
    • https://sirunolova.weebly.com/uploads/1/3/5/3/135303996/5708841.pdfIn PDF document text
    • https://taxurazuzar.weebly.com/uploads/1/3/4/0/134042721/boxozar.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://uploads.strikinglycdn.com/files/eb7394e5-c763-422e-8881-abbc66064005/lejujofiriparaxudakifov.pdfIn PDF document text
    • http://wuranosa.pbworks.com/w/file/fetch/144416823/22992711737.pdfIn PDF document text
    • http://visetululiv.pbworks.com/f/pobesaxezobokabixeromu.pdfIn PDF document text
    • http://tagexoba.pbworks.com/f/devipefe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f3f26ca-3553-4770-959c-da2c919f19bb/54900369098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/447090b7-6c62-444c-b57b-e5aab3805f85/battle_angel_alita_anime_vs_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d249c6c9-9f01-4c17-8582-f22f67ee390d/psalm_23_4-5.pdfIn PDF document text
    • http://bekivuxuga.pbworks.com/f/watch_free_full_movies_no_sign_up.pdfIn PDF document text
    • http://xifilipisi.pbworks.com/w/file/fetch/144411492/29035849763.pdfIn PDF document text
    • http://supatibu.pbworks.com/f/60512437949.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e44cd706-2b50-4c25-bbc9-8bf06df8dc7b/11704038696.pdfIn PDF document text
    • http://nigezid.pbworks.com/f/does_metformin_cause_muscle_fatigue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de5c8407-9c47-4073-982b-a2121e22f253/how_many_words_did_shakespeare_invent_that_we_use_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f42cc43-a936-4095-aace-141d67f4b907/sky_high_full_movie_tamil_dubbed_watch_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b719234-d191-41f2-b4da-cf54be840de8/20453885381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55c18e0a-5b74-428c-9146-38a8083579aa/cuento_la_gallina_degollada_horacio_quiroga.pdfIn PDF document text
    • http://kedetuwi.pbworks.com/f/83043119165.pdfIn PDF document text
    • http://kiletejude.pbworks.com/f/tebawu.pdfIn PDF document text
    • http://rugewenuzed.pbworks.com/w/file/fetch/144423066/wugisixezenikowuvepevil.pdfIn PDF document text
    • http://kedetuwi.pbworks.com/f/john_deere_425_mower_deck_belt_diagram.pdfIn PDF document text
    • http://visetululiv.pbworks.com/w/file/fetch/144422907/vadage.pdfIn PDF document text
    • http://visetululiv.pbworks.com/f/43942838024.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd31a112-d23f-475a-9b80-0539f5e3ea93/oxford_biology_dictionary.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_off0000e948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE948 5256 bytes
SHA-256: 57518b1ff11ad6719e0c4b025e372a7e9c0377438c7b6b03644237bce4b21028
font_01_sfnt_off0000fb4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4E 10100 bytes
SHA-256: c21722f43d0739ac19f5d3ae36586bd5743d999e4c722eadf40e3266713e4bd8
font_02_sfnt_off00011dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DEE 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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