Malicious PDF — malware analysis report

Static analysis result for SHA-256 483aa6d0205aa52a…

MALICIOUS

PDF

67.0 KB Created: 2020-11-13 21:20:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 29f0f1192e554c29707f12c76b5601df SHA-1: 93f6934ff54300d3831cc6cb99bc87631804361a SHA-256: 483aa6d0205aa52aff48a9fa035e299ca900011350b7165ce4dd07e0fc83ca6c
262 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links to external PDF files, a common tactic for SEO poisoning and link farming, with one link pointing to known malicious redirector infrastructure. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be part of a multi-stage attack involving encrypted payloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/aws?utm_term=convert+adobe+pdf+to+word+online+free In PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/7334041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382784/normal_5fae25b13d1bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407780/normal_5fa8ac4c55710.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383802/normal_5f9a6b6523075.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387699/normal_5fad57ca365f3.pdfIn PDF document text
    • https://garituba.weebly.com/uploads/1/3/4/3/134335889/d106bb9d.pdfIn PDF document text
    • https://setekonireza.weebly.com/uploads/1/3/4/1/134131298/fidofusigemon.pdfIn PDF document text
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/miwijob_sinidozuxuvida_kejipajikoj_kegosopi.pdfIn PDF document text
    • https://numilobes.weebly.com/uploads/1/3/4/2/134235742/3420659.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/fexemolenale.pdfIn PDF document text
    • https://joleziravakejar.weebly.com/uploads/1/3/4/4/134460301/50e0b91ff37.pdfIn PDF document text
    • https://vakasuvarepem.weebly.com/uploads/1/3/4/3/134328097/1429892.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/rebesudanolo/karadedisezokubojev.pdfIn PDF document text
    • https://s3.amazonaws.com/vasofirida/nusomizerunopebure.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/mutant_genetic_gladiators_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/mound_westonka_high_school_supply_list.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_off0000cada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCADA 5056 bytes
SHA-256: b9ce6768a5d4763cc2e578690aab7c296af115ee39839b81ca3635ff26805baa
font_01_sfnt_off0000dc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC2A 10112 bytes
SHA-256: d93e3159b67fb4cf9f6cb405dae846a056536e7465e2b493bb9fb4e8ee164dc7

Open this report in the interactive analyzer, or submit your own file for analysis.