Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ade8b07de9be0b…

MALICIOUS

PDF

36.6 KB Created: 2020-06-05 08:41:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96f2b6e65d11a2f47f088016c487440a SHA-1: 4a82d68d426dbaaec686f008d4ef561006fdb634 SHA-256: 15ade8b07de9be0b8a74c534efee25001db34b40685590a4a1488c621b85d273
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, many of which point to suspicious domains. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external link farm, suggesting a malicious intent to manipulate search engine results or host malicious content. The 'SE_CALLBACK_LURE' heuristic also suggests a potential phishing or scam pretext, although no specific phone number was extracted. No scripts were extracted from this sample, limiting the analysis of direct execution capabilities.

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) 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://m8bet.lucky1st.com/uploads/1/3/1/4/131452876/131452876.html#mini+football+fields+in+lebanon
    • http://paladinbynight.com/uploads/1/3/0/4/130436020/81311ba9fa58.pdf
    • http://realpgphotos.com/uploads/1/3/0/6/130620835/9408651.pdf
    • http://mail.qualitylane.nl/uploads/1/3/0/5/130543063/kafubanubizodolegip.pdf
    • http://dawnssecrettreasure.shop/uploads/1/3/0/7/130775949/3001777.pdf
    • http://mattarodriguezportfolio.com/uploads/1/3/2/3/132302819/2104896.pdf
    • http://seriouslysassy.net/uploads/1/3/0/3/130313294/ferazimixokawokisum.pdf
    • http://m8bet.lucky1st.com/uploads/1/3/1/4/131452876/terms.html
    • http://m8bet.lucky1st.com/uploads/1/3/1/4/131452876/dmca.html
    • http://m8bet.lucky1st.com/uploads/1/3/1/4/131452876/policy.html
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://satugovanuw.files.wordpress.com/2020/06/fibixepowiviwixe.pdf
    • https://maforebe.files.wordpress.com/2020/06/galuruwu.pdf
    • https://kejutujubufa.files.wordpress.com/2020/06/jexeriwujusazuwu.pdf
    • https://tegafularak.files.wordpress.com/2020/06/35527935829.pdf
    • https://nedomexapa.files.wordpress.com/2020/06/70997333141.pdf
    • https://tujirejon.files.wordpress.com/2020/06/64487031427.pdf
    • https://rodagunetaxa.files.wordpress.com/2020/06/gekozodarimaz.pdf
    • https://sixaniledu805530721.files.wordpress.com/2020/06/47296140015.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ff2.bin
409e558dc0994083a036c2988bbf3c353c6014f1b492d36dd306b5eb13494907		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF2 11352 bytes

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