Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8896018963f8140…

MALICIOUS

PDF

71.2 KB Created: 2021-02-16 16:12:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e6eb2568e9502a6a7df65531a990cdfd SHA-1: 3a0c041bc5b4571743fa14855963bb0f616d1134 SHA-256: a8896018963f8140cb725d8316bd8380056ab17eb2d8f6ddffd4ec3083c2047d
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://bologen.ru/aws?utm_term=how+to+test+apc+smart+ups+1500 PDF link annotation
    • https://cdn.sqhk.co/fepogosu/hfWCJhj/42912658155.pdfIn PDF document text
    • http://agentsecure.space/definition_of_research_by_scholarslqzw9.pdfIn PDF document text
    • http://espaceabonnes.com/lutufuvlafkp.pdfIn PDF document text
    • https://rebageronamit.weebly.com/uploads/1/3/0/7/130775484/xuduxamedo-vakidivug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479462/normal_5fd6985f67f20.pdfIn PDF document text
    • https://nupuwumot.weebly.com/uploads/1/3/5/3/135305030/fufutojakutuper_zabogodesisox_wibajixibul_labemisubelipeg.pdfIn PDF document text
    • https://cdn.sqhk.co/nobukomorur/gjijYEy/ipl_chennai_super_kings_match_2014.pdfIn PDF document text
    • http://likelid.xyz/vizetofitewuterazi5ccqq.pdfIn PDF document text
    • https://valejuti.weebly.com/uploads/1/3/0/7/130739952/757c578f3d8.pdfIn PDF document text
    • https://cdn.sqhk.co/jonilinenuvo/jUbQ84G/93445762416.pdfIn PDF document text
    • https://cdn.sqhk.co/suwezuzifu/ggIiesQ/61365117494.pdfIn PDF document text
    • https://cdn.sqhk.co/jememobak/higdxPy/infiniti_commercial_song_youtube.pdfIn PDF document text
    • http://ifeelgood.club/bleach_mobile_3d_apk_iostpfsq.pdfIn PDF document text
    • https://rixuxakixolewe.weebly.com/uploads/1/3/1/3/131380342/kigutifemofuvub.pdfIn PDF document text
    • https://wevuviwujito.weebly.com/uploads/1/3/1/6/131636984/jununenidilitexeli.pdfIn PDF document text
    • https://mabobuloxulekev.weebly.com/uploads/1/3/4/6/134692970/6329454.pdfIn PDF document text
    • http://natgood.space/pudorimumatfg82r.pdfIn PDF document text
    • https://cdn.sqhk.co/diwamukef/hejcghi/fall_guys_ultimate_knockout_download_size.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BF 5420 bytes
SHA-256: adb56f72e1db281c1e0cb29cd0e043865c5760941188ca90c8d1c7e90fd75271
font_01_sfnt_off0000eb2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2E 10804 bytes
SHA-256: 217599fc745e0f80ceb5c15af06643689c8448500689d66e1fe2df6399f56ca9

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