Malicious PDF — malware analysis report

Static analysis result for SHA-256 6840306392db0144…

MALICIOUS

PDF

80.8 KB Created: 2020-05-14 17:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de0392aef9edf23e0084590acdb81d38 SHA-1: 3c012d8afec522ed958bdbedad1cca6ffb81dd46 SHA-256: 6840306392db014435d375eeb2429c6e20e0ac0d2fa9885abc3dd723f3eb6568
176 Risk Score

Malware Insights

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

This PDF document is classified as malicious, exhibiting characteristics of both an advance-fee scam and a multi-factor authentication (MFA) lure. It contains numerous external links, many of which point to PDF files with numeric slugs, suggesting a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains a reference to 'streaming platforms in canada' and a URL that appears to be the primary lure. The presence of multiple external PDF links and the ML classifier's high confidence score indicate a sophisticated malicious operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://bugoza.com/uploads/1/3/0/9/130969368/130969368.html#streaming+platforms+in+canada
    • http://lffitnesshamptons.com/uploads/1/3/0/7/130739624/4664221.pdf
    • http://rgtaz.info/uploads/1/3/0/5/130547659/rojuninafinanif.pdf
    • http://lovetolearnfl.com/uploads/1/3/0/9/130969231/13032.pdf
    • http://uralmotorcyleparts.com/uploads/1/3/1/4/131483153/deab514c7fe.pdf
    • http://mosaik-fabrik.de/uploads/1/3/1/6/131606789/2e3d410c19.pdf
    • http://madisonborthcollages.com/uploads/1/3/0/3/130379326/6518055.pdf
    • http://sheepadoodless.com/uploads/1/3/0/6/130620838/3053614.pdf
    • http://fabcreteindustries.com/uploads/1/3/0/6/130620818/gezozoxesag_sijuwu.pdf
    • http://woodhouseandassociates.com/uploads/1/3/0/7/130740242/zolovuxobirazore.pdf
    • http://stgeorgebt.com/uploads/1/3/0/5/130543813/9652932.pdf
    • http://urbanvertical.ca/uploads/1/3/0/7/130740492/degeromunegibureno.pdf
    • http://christopherreyesstudio.com/uploads/1/3/0/5/130550956/joruw_tufufetunuki_veraxub_ribavud.pdf
    • http://pensacolaseoandwebdesign.com/uploads/1/3/0/7/130775965/pewavusope-bikalokowin.pdf
    • http://gloriaanholt.com/uploads/1/3/0/6/130605084/7720809.pdf
    • http://clowultimatehealthsolutions.com/uploads/1/3/1/4/131437655/jogufezusuzi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off000111c0.bin
a8eced8ee222e3c98e924b72435395817040322eabd468039719f0df847fed55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111C0 11496 bytes

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