Malicious PDF — malware analysis report

Static analysis result for SHA-256 abadf29be4f51e26…

MALICIOUS

PDF

28.1 KB Created: 2020-05-18 21:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9c0ef634b8109f5e26d8903e70c7ac8 SHA-1: 87238d78f90fdbd4d9deac45ddaff2255a63e3ef SHA-256: abadf29be4f51e26246219f40faa5b3bf12fd67afbb3b08c48aafd8a04a00739
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many with numeric or generic slugs, indicative of a link farm or SEO abuse tactic. The document body, though partially corrupted, includes a URL and text related to 'lady popular fashion arena cheats', suggesting a lure for users interested in such topics. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a scam or phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • 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://ankezimmermann.ca/uploads/1/3/0/5/130543133/130543133.html#lady+popular+fashion+arena+cheats
    • http://cobaltconsultingandmarketing.com/uploads/1/3/0/6/130605111/rajimunopu-pufuralafigobip-lipugumotakif-zuvitedemenopik.pdf
    • http://asociacionprimerainfancia.org/uploads/1/3/0/2/130289345/konuxok-beferere-kipuvemijirijo.pdf
    • http://bayesianupdate.com/uploads/1/3/0/6/130620184/7906603.pdf
    • http://alleviatepharms.com/uploads/1/3/0/2/130291040/2431171.pdf
    • http://dbpotter.com/uploads/1/3/0/2/130289733/gukenomibug_manafe_megiwekub.pdf
    • http://truthsabounds.com/uploads/1/3/0/6/130639471/zijepudatuporuresu.pdf
    • http://activa-cleaning-services.com/uploads/1/3/0/6/130639532/ce3ebca176.pdf
    • http://specializinginuniquefloral.com/uploads/1/3/1/6/131606305/257ddf.pdf
    • http://hardingerc.com/uploads/1/3/1/4/131484467/worujijeka_ributuruxixafeb_lewajiwib.pdf
    • http://709-bonus.site/uploads/1/3/1/4/131438758/vofexowixalo.pdf
    • http://kohno-corp.com/uploads/1/3/1/4/131406569/7865231.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004732.bin
c813f1bdda820618ee288b9468345fa704eddaf6100c872f6148cbcc06bc9d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4732 8912 bytes

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