Malicious PDF — malware analysis report

Static analysis result for SHA-256 78f9d7e7346537e2…

MALICIOUS

PDF

39.5 KB Created: 2020-03-21 15:52:03 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: aec86017513a1ebc1e778f5dca548460 SHA-1: 5fb97e5b07fda3471e832a9c20bba96bab49806f SHA-256: 78f9d7e7346537e240a5a1b3c11d08e9efcea710d2043712f3ee197eb1cace4b
96 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a link farm or SEO spam, embedding a large number of external URLs. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous PDF_SEO_LINK_FARM heuristics indicates a deliberate attempt to manipulate search engine results or redirect users to potentially harmful content. No scripts were extracted, but the sheer volume of outbound links suggests a malicious intent to drive traffic or distribute further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://wilddivinityyoga.org/uploads/1/3/0/2/130291971/130291971.html#lung+cancer+icd+10+cm PDF link annotation
    • http://cpanel.alltuneandlubekc.com/uploads/1/3/0/4/130436173/wopexemexaz-kapinolu.pdfIn PDF document text
    • http://robinjoyphotography.net/uploads/1/3/0/7/130775053/9846986.pdfIn PDF document text
    • http://adentapoland.com/uploads/1/3/0/3/130379411/f41f90ae166851.pdfIn PDF document text
    • http://chxrryblogs.com/uploads/1/3/0/5/130551386/jedufonut_wadudokexuliruv_xiduperonode.pdfIn PDF document text
    • http://heinslpinc.com/uploads/1/3/0/6/130639815/gixajut.pdfIn PDF document text
    • http://pharrfamilychiropractic.com/uploads/1/3/0/4/130483690/9533941.pdfIn PDF document text
    • http://jij.net/uploads/1/3/0/4/130483286/netopegopaxotedopax.pdfIn PDF document text
    • http://pocketbricks.com/uploads/1/3/0/4/130476091/6922262.pdfIn PDF document text
    • http://getyourlocation.com/uploads/1/3/0/8/130873996/xaboloke.pdfIn PDF document text
    • http://inceptionsdesign.net/uploads/1/3/0/6/130640063/xudukamapawelo.pdfIn PDF document text
    • http://myegiftvoucher.com/uploads/1/3/0/7/130739781/2424fb.pdfIn PDF document text
    • http://infosoldier.com/uploads/1/3/0/7/130740357/d08246e9.pdfIn PDF document text
    • http://www.short.shiraconsulting.ch/uploads/1/3/0/2/130289502/c0037ae6faa89.pdfIn PDF document text
    • http://www.californiaave.info/uploads/1/3/0/8/130814605/bf9c8e29.pdfIn PDF document text
    • http://localhippy.com/uploads/1/3/0/7/130739322/romisaxonusizujali.pdfIn PDF document text
    • http://timtosuccess.com/uploads/1/3/0/7/130776434/8b4553a7a104e1.pdfIn PDF document text
    • http://www.alisonhillphotography.com/uploads/1/3/0/6/130604467/2918160.pdfIn PDF document text
    • http://joewuphoto.com/uploads/1/3/0/4/130488252/1108377.pdfIn PDF document text
    • http://grizfitlife.com/uploads/1/3/0/5/130539022/fazovuz.pdfIn PDF document text
    • http://www.sherwoodinmo.com/uploads/1/3/0/4/130489052/gojuxajoxeka.pdfIn PDF document text
    • http://www.agmetalworx.com/uploads/1/3/0/5/130550968/xirapawuti-bepejiwozixek-jimasolul.pdfIn PDF document text
    • http://susrut.com/uploads/1/3/0/5/130550783/xaxadotigomibe_viloze.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 4

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_off000074f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74F6 7080 bytes
SHA-256: f09ff575e91cb8fad4df86a44b3c57e5342c8aec88562b6f8e0f6c4aac9b62b2

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