Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce7f09bb11774467…

MALICIOUS

PDF

39.9 KB Created: 2020-03-30 03:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: dcc5fbb56072ac61a517995bbcbf5b38 SHA-1: 0c0c01ac3a03ae6d84dfb26b4736044d9e24cd62 SHA-256: ce7f09bb11774467cd62698a761257d5894a48a3bd286c19b049aeeb0f9fd62c
94 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, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text related to 'Orlando Virginia Woolf summary' and mentions the wkhtmltopdf generator, suggesting a lure document. The primary attack pattern involves directing users to a network of websites, as evidenced by the numerous URLs extracted. No scripts were extracted from this sample.

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://colddiamnd.com/uploads/1/3/0/9/130969652/130969652.html#orlando+virginia+woolf+summary
    • http://rangimoleni.com/uploads/1/3/0/5/130588574/f025a73.pdf
    • http://landscapingtacomawa.com/uploads/1/3/1/0/131071231/66b196053b35e42.pdf
    • http://buckeystowndesigncoop.shop/uploads/1/3/0/6/130621387/f8c408927.pdf
    • http://laphet.net/uploads/1/3/1/1/131164573/6e387cfa5dd0d.pdf
    • http://lafayettebesttreeservice.com/uploads/1/3/0/6/130605388/8972223.pdf
    • http://elite11footballcamps.com/uploads/1/3/0/5/130589287/f9d4968b6373d1d.pdf
    • http://pcflooringplus.com/uploads/1/3/0/6/130639803/2982f368c34b.pdf
    • http://countrysidefarms.org/uploads/1/3/0/2/130288359/bozalidawuj.pdf
    • http://rogaprinter.com/uploads/1/3/0/7/130739121/remuxafixoretasetuw.pdf
    • http://goldendaleobservatory.org/uploads/1/3/0/7/130740008/vijibanuti-vejanudekagis-remenedanim-bovokakavafelaw.pdf
    • http://mitterbhatinfracon.in/uploads/1/3/0/7/130739303/7410271.pdf
    • http://mail.captainpaulsdogs.com/uploads/1/3/0/2/130270986/80b96fb.pdf
    • http://vickybureau.com/uploads/1/3/0/5/130550756/wuxusurawuvem.pdf
    • http://liztongmft.com/uploads/1/3/0/6/130639177/fumenukip_vujazilupizawok.pdf
    • http://skyrivercapital.com/uploads/1/3/0/6/130622007/6665712.pdf
    • http://familybrandsteesandcaps.net/uploads/1/3/0/6/130640128/2342f9d1ce437.pdf
    • http://artsandplay.com/uploads/1/3/0/6/130639083/8adbc5b4dff.pdf
    • http://whitneyhartson.com/uploads/1/3/0/7/130739190/jezixife.pdf
    • http://spacecenterfamilypractice.net/uploads/1/3/0/6/130603850/5aed5a2.pdf
    • http://solarsevendesign.com/uploads/1/3/1/0/131070279/muronova.pdf
    • http://jams.rocks/uploads/1/3/0/2/130289670/0784857.pdf
    • http://mysmartgrandchild.com/uploads/1/3/1/1/131164174/587528.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_off000072ed.bin
4ddbfe8315111732f405e8ac1746c031997033a64e360bf676bfde303b56bf92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72ED 7500 bytes

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