Malicious PDF — malware analysis report

Static analysis result for SHA-256 e525c05a1bc952c2…

MALICIOUS

PDF

78.0 KB Created: 2021-02-04 14:15:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ffca38d57fcc3c175e91c48f37749b89 SHA-1: f89b1795023ff8c1737eefeeafc0d4871e68a2e4 SHA-256: e525c05a1bc952c26e99827d0778014e1ff898a72dde01e1bef0a14018a116d0
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=bibliografia+formato+apa+2019+ejemplo PDF link annotation
    • https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/loxajekagi.pdfIn PDF document text
    • http://arnautmebel.ru/madarukasidufurq0hu.pdfIn PDF document text
    • https://tejukazirinari.weebly.com/uploads/1/3/1/3/131398521/kozanap-wusaze-xaxevexutixeri-zinobirug.pdfIn PDF document text
    • https://cdn.sqhk.co/bekutojeke/7hig6p5/4104926230.pdfIn PDF document text
    • https://cdn.sqhk.co/mekerijiwuv/IojicPy/build_a_bear_harry_potter_quidditch.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448750/normal_5ff5b8c36089d.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/jeluleluwisok.pdfIn PDF document text
    • http://trellos.fun/kingdom_adventurers_job_agencyaayk0.pdfIn PDF document text
    • https://wikefazopikevi.weebly.com/uploads/1/3/4/7/134715570/xesadikemoka-povov-ruxeregumagize.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450427/normal_601a0fe5d448a.pdfIn PDF document text
    • https://cdn.sqhk.co/dizoketa/jdtfvgf/96988247400.pdfIn PDF document text
    • https://cdn.sqhk.co/zugeketinog/jhbcBp2/first_grade_math_worksheets_common_core.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/gjLfxib/kedokerulapabidibos.pdfIn PDF document text
    • http://mihetos.xyz/jiberuxoposa029sl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/what_does_lobster_taste_like_yahoo_answers.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2F 5788 bytes
SHA-256: 3b1358f849cd2c6e5fea20d88df7390246a37b740c2f61d1a1868014e3acfb4e
font_01_sfnt_off000102e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E8 12280 bytes
SHA-256: 08a544dfbe147e27a011503fe6b8ee34038de7aa06a8c0b3fe19f0c1200f435b