Malicious PDF — malware analysis report

Static analysis result for SHA-256 499a09d1697d82a7…

MALICIOUS

PDF

37.4 KB Created: 2020-05-24 03:27:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe7b8f2680be1c65b268b150b85fd0cd SHA-1: 31fe4837d5aef6b971bb8ed11b53662e801dfc98 SHA-256: 499a09d1697d82a7d136cde1963ae26c22280319b191b07dcccea4a662e2af8e
62 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO spam or to distribute further malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a mass of external links pointing to PDFs. The document body, though heavily obfuscated, contains references to URLs that are also present in the extracted URL list, reinforcing the link-farming attack pattern. No scripts were extracted, limiting further analysis of direct payload delivery.

Heuristics 3

  • 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
  • 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://samcrowter.co.uk/uploads/1/3/0/7/130738578/130738578.html#economics+principles+in+action+book
    • http://colourfulcreationshomeware.com/uploads/1/3/0/4/130435516/9550d7ae3ab664.pdf
    • http://jesusfreakstickers.com/uploads/1/3/0/7/130775085/xefobegowikibi.pdf
    • http://celebratehopefoundation.net/uploads/1/3/0/6/130605125/vewojusedagawijusebu.pdf
    • http://dannguyen.us/uploads/1/3/0/6/130620598/eb5bb7.pdf
    • http://9f62fcb350.com/uploads/1/3/0/7/130776123/lepijadowabamux.pdf
    • http://eaglepointprep.com/uploads/1/3/0/5/130588202/816df45d3d.pdf
    • http://royalbodiesandrepair.com/uploads/1/3/0/6/130603772/42eaab.pdf
    • http://jfforacure.org/uploads/1/3/1/4/131453226/3192157.pdf
    • http://solopes.com/uploads/1/3/0/6/130605289/zezulamarukogumupe.pdf
    • http://hostmaster.ahlsecurestorage.ca/uploads/1/3/0/5/130588778/8004610b3fb27e2.pdf
    • http://titangeneralconstruction.com/uploads/1/3/0/8/130873737/77073db329c782.pdf
    • http://globallearninghub.org/uploads/1/3/0/5/130551021/f9549da16ae49cf.pdf
    • http://mx.victoryhinesville.com/uploads/1/3/0/8/130813582/suromaxap.pdf
    • http://contrafrank.com/uploads/1/3/1/3/131379181/gejikugosogepa.pdf
    • http://flowergurlz.com/uploads/1/3/0/5/130542965/7439922.pdf
    • http://southernbijoux.com/uploads/1/3/0/4/130435929/bejifoj.pdf
    • http://kittysfantasies.com/uploads/1/3/0/2/130291475/wubefeximize.pdf
    • http://bm-photography-uk.com/uploads/1/3/0/4/130477293/2998466.pdf
    • http://visionbystin.com/uploads/1/3/1/4/131407408/tuketagi.pdf
    • http://e-learninginteractive.com/uploads/1/3/0/2/130291800/5959092.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_off000066cc.bin
3007b0a4cb0ef4b39c5756a3a25b7c8d0d628dfafe10dca7ca2a988d00ee5446		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66CC 10308 bytes

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