Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ca833590f10987…

MALICIOUS

PDF

67.9 KB Created: 2021-02-16 19:20:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: de7f123671e7c69162bdda95c2f1aa21 SHA-1: a40bd1e4b0783ca63225a92c85c7d7f0a5cfa3e4 SHA-256: 17ca833590f10987f931c3395df728cc69baf4a65d19f5b6aa8b498823d673c2
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=green+meadows+conference+wrestling PDF link annotation
    • https://rugexosijebup.weebly.com/uploads/1/3/4/0/134017508/3056466.pdfIn PDF document text
    • http://mastera-saydinga.ru/luxiverh253i.pdfIn PDF document text
    • https://penuwepilaxol.weebly.com/uploads/1/3/4/7/134756509/dexebe_goporaji_pitaximifom_sawokeraxodino.pdfIn PDF document text
    • https://miletotafog.weebly.com/uploads/1/3/4/7/134758503/renafukedekun-bimozifamelu.pdfIn PDF document text
    • https://xowozasa.weebly.com/uploads/1/3/3/9/133999953/bad5982c2d.pdfIn PDF document text
    • https://nuxirudeduw.weebly.com/uploads/1/3/4/4/134442083/37cf5f452e6.pdfIn PDF document text
    • https://gapojusegora.weebly.com/uploads/1/3/1/4/131408170/5692900.pdfIn PDF document text
    • https://wuvotawek.weebly.com/uploads/1/3/4/8/134872633/8850199.pdfIn PDF document text
    • https://parikijofema.weebly.com/uploads/1/3/1/3/131383717/wixiz.pdfIn PDF document text
    • https://biwazasidatuf.weebly.com/uploads/1/3/4/3/134373857/5142612.pdfIn PDF document text
    • https://jojawetoterul.weebly.com/uploads/1/3/4/4/134404105/xigiziserivotij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zipokuxabatu.rf.gd/legezeribunizowobopef.pdfIn PDF document text
    • http://duwamiwimi.rf.gd/asrm_guidelines_for_female_infertility.pdfIn PDF document text
    • http://movutep.rf.gd/62455544621.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_off0000cf54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF54 5464 bytes
SHA-256: 98e47c295c4db12798953e0a5961d6be2beaa913000a448ef35a5afadd4a7a38
font_01_sfnt_off0000e1e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E8 9700 bytes
SHA-256: 7aa6cbbb6451fb778ef57ff120dc67e58a2ec4de23b62994f2628eef9507e37b