Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b1f5df66cb8e6f…

MALICIOUS

PDF

56.0 KB Created: 2020-06-03 19:49:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 399e24969aa78eb5750ca6441ecd7daf SHA-1: 2f39e2369001dc9804d12e4f641839c8f9c53d10 SHA-256: 01b1f5df66cb8e6fdb060b830be09c3056aedb3b95c2471d2deff0324e07c08f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. One of the embedded URLs, http://london-office-2.pleasingfood.com/uploads/1/3/0/4/130436145/130436145.html#o+bacalhau+leva+cilantro+ou+salsa, is directly referenced in the document body. The ML classifier also flagged this PDF as malicious. The presence of numerous links suggests a potential SEO manipulation scheme or a distribution point for further malicious content.

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://london-office-2.pleasingfood.com/uploads/1/3/0/4/130436145/130436145.html#o+bacalhau+leva+cilantro+ou+salsa PDF link annotation
    • http://3boyspaintingparties.com/uploads/1/3/0/2/130272937/ae85bffd6c68.pdfIn PDF document text
    • http://74-123-77-169.mgwnet.com/uploads/1/3/0/3/130323616/768c183fd3b.pdfIn PDF document text
    • http://yavapaifindaride.com/uploads/1/3/0/4/130435978/zusefizikezar_gogepudi.pdfIn PDF document text
    • http://taximurfreesboro.com/uploads/1/3/0/5/130551922/xawod-sasukujogenu-fidununowazobi.pdfIn PDF document text
    • http://cakesashhawks.com/uploads/1/3/1/8/131856225/8aef0a7576.pdfIn PDF document text
    • http://keepcoloradohonest.com/uploads/1/3/0/5/130539457/4036709.pdfIn PDF document text
    • http://jllcapitalmarketswestbrookiii.com/uploads/1/3/0/2/130272477/jufivo.pdfIn PDF document text
    • http://london-office-2.pleasingfood.com/uploads/1/3/0/4/130436145/terms.htmlIn PDF document text
    • http://london-office-2.pleasingfood.com/uploads/1/3/0/4/130436145/dmca.htmlIn PDF document text
    • http://london-office-2.pleasingfood.com/uploads/1/3/0/4/130436145/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://furujidud.files.wordpress.com/2020/06/27468206461.pdfIn PDF document text
    • https://jagunijo.files.wordpress.com/2020/05/19754596358.pdfIn PDF document text
    • https://pezezej.files.wordpress.com/2020/05/81844548498.pdfIn PDF document text
    • https://rapurujegoli.files.wordpress.com/2020/05/zasobobifikasosunabapili.pdfIn PDF document text
    • https://rojevaliri.files.wordpress.com/2020/06/62591483540.pdfIn PDF document text
    • https://japilif.files.wordpress.com/2020/06/muxanoxeremodawudezufotat.pdfIn PDF document text
    • https://vejukalefu.files.wordpress.com/2020/06/87938687466.pdfIn PDF document text
    • https://xujeveva.files.wordpress.com/2020/06/8609130417.pdfIn PDF document text
    • https://gunobuw.files.wordpress.com/2020/06/sipakitonezevusume.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
    • http://scripts.sil.org/OFLIn 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_off0000a8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8E7 13596 bytes
SHA-256: cb0c0c5660d6ab4c8ac71a3c0a21d032e2bfe8437249c96cb5b4d5d99862f0b3

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