Malicious PDF — malware analysis report

Static analysis result for SHA-256 0762e3fe0e6719a7…

MALICIOUS

PDF

71.0 KB Created: 2021-03-30 21:18:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ea284b3c9908798790b947247fbcceba SHA-1: 7d4280eadeb79504da91baf6f65c7bb1bfe9cbda SHA-256: 0762e3fe0e6719a74ff03dc74e3a10085f96250eb9bd851b1c3bbb99cd16ecec
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were extracted, the presence of numerous external links and the overall structure suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/wix?keyword=last+first+kiss+one+direction+lyrics PDF link annotation
    • http://nakotigolajeg.scienceontheweb.net/xufejigajarepiletuguxodo.pdfIn PDF document text
    • http://women-ita.space/basunudofilelizo6q6.pdfIn PDF document text
    • http://lnstagramverificationbadge.com/586090836229n7wr.pdfIn PDF document text
    • http://tebafurunaxinuj.getenjoyment.net/what_bulb_for_neff_oven.pdfIn PDF document text
    • http://rivalo130.com/hope_community_charter_school_calendarp7bdy.pdfIn PDF document text
    • http://xadixul.66ghz.com/hostage_to_the_devil_malachi_martin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d4e73f68-9870-4c81-be0c-0a6dd7607cd2.filesusr.com/ugd/6f53d7_6af58d0b06074d9d960715c39fe6b118.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/73b6187d-9102-4d91-9b3e-3da4fa7afa55/69738698650.pdfIn PDF document text
    • https://6e345194-e688-4037-aa24-2ff230a16836.filesusr.com/ugd/ce9fe1_979d63ca1e56470cbdfa8ddda6dc9e87.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0243648-9ba9-44c9-b337-4a3ab3d00d60/kenmore_heavy_duty_70_series_washer_leaking.pdfIn PDF document text
    • http://nafaradevofipaf.myartsonline.com/libros_de_harry_potter_en_espaol_para_leer.pdfIn PDF document text
    • https://203e7bc3-08d7-4ecc-a8df-f797e0d4a079.filesusr.com/ugd/d4579c_560778ed71c64d049f8a340ec2358f85.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8af0cf73-fa94-4476-ba65-1d6e814e73f5/68861550814.pdfIn PDF document text
    • http://vurekaxusatol.epizy.com/chlamydia_trachomatis_adalah.pdfIn PDF document text
    • http://sexikiti.epizy.com/wiwifavazobisazokotaka.pdfIn PDF document text
    • http://vagaloxesawazo.rf.gd/80543934980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84f270f8-8999-46ce-b490-4855f940fb72/weka_tutorial_exercises_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba29ef8a-6475-4ad2-acc4-334c55a877d6/bepemu.pdfIn PDF document text
    • https://0dea665b-aaaa-42f3-a52c-f86f0fd1efa2.filesusr.com/ugd/8b9728_6f48a577622143b4a50cc9eb2a4832b0.pdf?index=trueIn PDF document text
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_45af7ce641df43d4a7eb80859609d1cf.pdf?index=trueIn 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_off0000da0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA0E 5120 bytes
SHA-256: 8ac7b4313b71751b6dfa2029b281e1bd0e5a6f6fb1d340c270974faca62e2bb5
font_01_sfnt_off0000eb99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB99 10320 bytes
SHA-256: bee90230d534d7ca1bd12972eaa10eb6004239bf49bd1313ae2bbe2553b1f98c

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