Malicious PDF — malware analysis report

Static analysis result for SHA-256 490ee26b93cc5102…

MALICIOUS

PDF

37.8 KB Created: 2020-05-20 06:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 729087fca4bb7ae5634321d603b83803 SHA-1: 9c1ecadb429921cea7f1cac57297b97c86bd35d2 SHA-256: 490ee26b93cc5102fa7e90e554abcd0c804b6c4504f10a5adef7d9a2708970b8
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a method to distribute malicious content across multiple sites. The primary URL found in the document body is http://policetrailer.com/uploads/1/3/0/6/130603861/130603861.html#no+oyes+ladrar+los+perros+analisis+l, which is also part of this link farm.

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://policetrailer.com/uploads/1/3/0/6/130603861/130603861.html#no+oyes+ladrar+los+perros+analisis+l PDF link annotation
    • http://iowabirthactivists.org/uploads/1/3/0/4/130488476/8007386.pdfIn PDF document text
    • http://loudenslogistics.com/uploads/1/3/0/3/130323506/50699.pdfIn PDF document text
    • http://jimkatz.com/uploads/1/3/1/0/131070044/nowogoran-xigigalogafel-gepilesemen.pdfIn PDF document text
    • http://clothingvn.com/uploads/1/3/0/7/130739883/5868819.pdfIn PDF document text
    • http://atfirstsighttheseries.com/uploads/1/3/1/6/131607305/7065109.pdfIn PDF document text
    • http://sincitycannatours.com/uploads/1/3/0/9/130969462/kijakozanok.pdfIn PDF document text
    • http://eliasonfoundation.org/uploads/1/3/0/8/130814900/dimanowufagorarefowe.pdfIn PDF document text
    • http://braydensmith.org/uploads/1/3/0/7/130738715/2463780.pdfIn PDF document text
    • http://tweekerz.net/uploads/1/3/0/7/130739994/4472776.pdfIn PDF document text
    • http://therocketdog.net/uploads/1/3/1/4/131453649/wigikiwenimelet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6735 10940 bytes
SHA-256: fed1ca3859a2e48ab3be7f1972ce0b51f4a0912a7cd6bba2723c6e9f51fd3733