Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee050f553ef771a…

MALICIOUS

PDF

41.3 KB Created: 2020-03-27 13:20:51 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 1d3426d256584175da144813be268048 SHA-1: 798bd39b7339823da5e99c41156b368e8e08aac5 SHA-256: 3ee050f553ef771a769be0e8592800303490badb84c365fe2175626a6b389af8
116 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to similarly structured URLs, indicating a link farm for SEO manipulation. Additionally, the document body text and heuristic firings suggest a callback phishing lure, prompting the user to call a phone number related to a fake issue. No scripts were extracted from this sample, limiting further analysis of its execution flow.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://compostpick-up.com/uploads/1/3/0/2/130289485/130289485.html#shark+cordless+vacuum+replacement+charger PDF link annotation
    • http://kierstenhathcock.com/uploads/1/3/0/4/130483592/3795676.pdfIn PDF document text
    • http://floridariskmanagers.com/uploads/1/3/0/6/130604788/mofalesil.pdfIn PDF document text
    • http://barsportpobla.com/uploads/1/3/0/6/130620313/kisumumet_sudifuwu.pdfIn PDF document text
    • http://epms.guru/uploads/1/3/0/7/130739287/2248489.pdfIn PDF document text
    • http://www.gandyfamilyreunion2020.com/uploads/1/3/0/8/130874592/7c55277b24d7363.pdfIn PDF document text
    • http://daveschnitter.com/uploads/1/3/0/5/130551775/seduwowunegol.pdfIn PDF document text
    • http://itsjustjello.com/uploads/1/3/0/6/130620868/fafomuwamejawikixoda.pdfIn PDF document text
    • http://louching.com/uploads/1/3/0/3/130379596/sugonok_gosojesudapex_fofimumu.pdfIn PDF document text
    • http://northcantontreeremoval.com/uploads/1/3/0/9/130969829/zimegegenawi.pdfIn PDF document text
    • http://glassbyrebecca.co.uk/uploads/1/3/0/6/130604610/gewikexitexut_mamigoruranixex_bowibove.pdfIn PDF document text
    • http://millsaviationcharities.org/uploads/1/3/0/3/130323600/3139180.pdfIn PDF document text
    • http://mychickadeesfuntasticnest.com/uploads/1/3/0/7/130774982/tudutifumoluger-gejabuk.pdfIn PDF document text
    • http://managedservicessacramento.support/uploads/1/3/0/6/130604090/4260bfc826.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

Related samples 3

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_off0000770a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770A 8592 bytes
SHA-256: 366bc7cf0d02d886af027f416061940cb83ca7a8c8f281a96208558b9d85050a

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