Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a084bb805488af…

MALICIOUS

PDF

67.2 KB Created: 2021-02-13 19:36:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4404f04d2c6fe50443448de8dc4c6736 SHA-1: ab6af6782e34dfa495205d8fed1b45977bb06063 SHA-256: 11a084bb805488af6c5ab861237139e7aead15599d1e94b5bd8fda502a26370f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=launching+the+imagination+5th+edition+pdf PDF link annotation
    • https://worijuxadije.weebly.com/uploads/1/3/4/8/134863955/zarokijiz.pdfIn PDF document text
    • https://cdn.sqhk.co/rosomugimo/gcQgd0d/12966290920.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/Xqohfge/game_backlog_app_android.pdfIn PDF document text
    • https://tuduzijusesuzi.weebly.com/uploads/1/3/1/4/131406801/d6ee2.pdfIn PDF document text
    • https://batigagonu.weebly.com/uploads/1/3/4/7/134774980/fugivojiwezi-kajosos-dufapo-tikugewo.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/jk4gg6v/milkman_karlson_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/wijijd3/2450764985.pdfIn PDF document text
    • https://dipakinujudisil.weebly.com/uploads/1/3/4/4/134468351/8343840.pdfIn PDF document text
    • https://mevukufidax.weebly.com/uploads/1/3/1/3/131379039/fatapabimag.pdfIn PDF document text
    • https://waxogisuges.weebly.com/uploads/1/3/0/7/130776632/xenepiraxekana-turuzaluzanapux-pakukejofeto-vanakako.pdfIn PDF document text
    • https://cdn.sqhk.co/kopizikob/bhajKgK/13947465003.pdfIn PDF document text
    • https://fapudunaga.weebly.com/uploads/1/3/0/7/130776769/memexofebarowa_xuradifaj_vorevininufar_gadudaxim.pdfIn PDF document text
    • https://mokabeninenaji.weebly.com/uploads/1/3/4/0/134013120/3912390.pdfIn PDF document text
    • https://cdn.sqhk.co/futogifoku/EnfhciC/sticker_sad_memes_y_frases_tristes_wastickerappes.pdfIn PDF document text
    • https://cdn.sqhk.co/rivitovolu/lhjjcgg/kodev.pdfIn PDF document text
    • https://cdn.sqhk.co/mozoposowi/uHuuieo/ear_infection_symptoms_in_adults_dizziness.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
    • 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_off0000bdf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDF6 5212 bytes
SHA-256: e3742f6883cfc4c96340066a25a2c16d68372ae934a5ab9972dc756f65803234
font_01_sfnt_off0000cf8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8F 10048 bytes
SHA-256: 9173f9b3a01310a1cdbccde4c1146cabede4cb227e51c4a26be9066d92f255ae
font_02_sfnt_off0000f16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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