Malicious PDF — malware analysis report

Static analysis result for SHA-256 af505a9ef4fe220d…

MALICIOUS

PDF

48.8 KB Created: 2020-06-07 02:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: f4574e210964fabe9e9b0f9db24258e2 SHA-1: d98bc4c6128ddd8406f242f326bfa4f874cf53a6 SHA-256: af505a9ef4fe220d9fc0e513866c05780a6ce7e4f68f1a5155da78cae288bb0a
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains a large number of external links, many of which point to PDF documents hosted on various domains, suggesting a link farm or SEO poisoning tactic. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a phone number, a common tactic in callback phishing and tech-support scams. The presence of numerous external URLs, including those pointing to PDF files, supports the attack pattern of luring users to malicious content or services.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • 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.
  • 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 http://2thepoolhouse.com/uploads/1/3/0/2/130270832/130270832.html#craigslist+massena+new+york PDF link annotation
    • http://pamelafoard.com/uploads/1/3/0/5/130550743/0aa221a700.pdfIn PDF document text
    • http://nevaglobalalliance.com/uploads/1/3/1/1/131164485/616781.pdfIn PDF document text
    • http://sleepmoodweightnw.com/uploads/1/3/0/5/130538987/serazamuxoderivaxi.pdfIn PDF document text
    • http://centrobeautyessence.com/uploads/1/3/0/4/130488412/6036471.pdfIn PDF document text
    • http://smpaintingmaine.com/uploads/1/3/0/6/130639953/lilunejexakox.pdfIn PDF document text
    • http://hostmaster.arisaigarchery.co.uk/uploads/1/3/0/3/130323761/zirimi-gozurufopusiz-tilakogo.pdfIn PDF document text
    • http://ldavismunro.com/uploads/1/3/1/8/131856666/5353635.pdfIn PDF document text
    • http://telferproperties.com/uploads/1/3/0/5/130539114/kisefivoge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://julabifefo633366968.files.wordpress.com/2020/06/pukawam.pdfIn PDF document text
    • https://zowidunu.files.wordpress.com/2020/06/bebawurizubevus.pdfIn PDF document text
    • https://gifanoveko220953740.files.wordpress.com/2020/06/jojiruzivofopumatuforozu.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
🗂 Part of campaign: zenithenergylimited.com.au 4 samples

Related samples 2

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_off00009184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9184 11556 bytes
SHA-256: 5b322fdfc381c678d220d0fc7c7babc4f8ea5e259c3f22b7674a83c9eb5ac415

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