Malicious PDF — malware analysis report

Static analysis result for SHA-256 e02bb1f86f9e10df…

MALICIOUS

PDF

49.8 KB Created: 2020-06-03 06:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1d1189ff3d84e13e20a6d68de974a6bc SHA-1: df8a1d9f21e74d078ca5feec9187a1113858b25e SHA-256: e02bb1f86f9e10df1728436965f86eafcc90d47d300eda8c0429d67e853130e1
212 Risk Score

Malware Insights

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

This PDF document contains a high number of external links, many of which point to known malicious redirector infrastructure. The document body, though obfuscated, contains a URL that is also present in the heuristics as a malicious redirector. The ML classifier strongly indicates maliciousness, and the overall structure suggests a link farm designed to lead users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 7

  • 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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ttraff.cc/wp3?keyword=pega+training+material+pdf#pega+training+material+pdf In PDF document text
    • http://scienceday.info/uploads/1/3/1/8/131857364/9549944.pdfIn PDF document text
    • http://seezombiesrun.com/uploads/1/3/0/4/130483869/8559054.pdfIn PDF document text
    • http://familyheritageestatesales.com/uploads/1/3/0/6/130639899/supizebo_diwewonesokigid_dosumagix.pdfIn PDF document text
    • http://riograndefarms.com/uploads/1/3/0/6/130604787/biwujo.pdfIn PDF document text
    • http://innocentsoul.org/uploads/1/3/1/4/131483153/dazagutape.pdfIn PDF document text
    • http://redefineworthy.com/uploads/1/3/1/4/131406354/9898530.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://nizekifu.files.wordpress.com/2020/05/48142646732.pdfIn PDF document text
    • https://berilin.files.wordpress.com/2020/05/88862298055.pdfIn PDF document text
    • https://gefadosujugi.files.wordpress.com/2020/05/49510949192.pdfIn PDF document text
    • https://zodudawizif.files.wordpress.com/2020/06/25440397760.pdfIn PDF document text
    • https://fuwetatew.files.wordpress.com/2020/05/kosojunukilev.pdfIn PDF document text
    • https://wordpress.com/tos/In PDF document text
    • https://wordpress.com/dmca.htmlIn PDF document text
    • https://wordpress.com/policy.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9431 11100 bytes
SHA-256: 143c85774058eef67d5347c66c500ef17c68b5b4db7b6197fdb487a58a3a7b1f

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