Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c07e0995ce8e51…

MALICIOUS

PDF

39.0 KB Created: 2020-05-20 00:48:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4bf967cb74bf8c01d31a1ce9cf37adb SHA-1: 1f1e581764a9e8521457848c2629ec675358a3db SHA-256: 06c07e0995ce8e517f2dc89967e60b3bf800d9d90dc73acc0e5a26424884a1d4
136 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are structured as a link farm, suggesting an attempt to manipulate search engine rankings or redirect users to malicious content. The presence of a fake CAPTCHA heuristic indicates a social engineering tactic to trick users into interacting with the document. While no scripts were explicitly extracted, the PDF structure and extensive link farm point towards a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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://slbconsultingservices.com/uploads/1/3/0/7/130740087/130740087.html#dyna+glo+heater+parts
    • http://streakweek.com/uploads/1/3/0/4/130489159/8565062.pdf
    • http://englishbulldogpuppyporknbeanshomestead.com/uploads/1/3/1/3/131384336/6472e.pdf
    • http://marstostay.com/uploads/1/3/1/4/131407138/7013274.pdf
    • http://mrsdsmithsthirdgrade.com/uploads/1/3/0/3/130323601/lavuzamum_tekawibuga_lowirojuk_nejugetemipap.pdf
    • http://waconda.com/uploads/1/3/0/6/130621829/zabubam.pdf
    • http://timdurantjr.com/uploads/1/3/0/7/130775432/52c101a.pdf
    • http://heavenlyleiakina.net/uploads/1/3/0/6/130640097/7b8c769f4215.pdf
    • http://stampinwithsweetpea.com/uploads/1/3/0/6/130604720/6413460.pdf
    • http://psicologaprato.com/uploads/1/3/0/6/130620543/31708136.pdf
    • http://protocelantioxidant.com/uploads/1/3/1/8/131856584/3317317.pdf
    • http://bealright.org/uploads/1/3/0/3/130323295/3253043.pdf
    • http://abigailrosenfeld.com/uploads/1/3/0/2/130272890/332031.pdf
    • http://luckynumber108.com/uploads/1/3/0/7/130740212/374520.pdf
    • http://techdirectorsclub.com/uploads/1/3/0/4/130489229/40c7945e6cc2ac.pdf
    • http://condakproperty.net/uploads/1/3/0/8/130874030/nejorebemowudina.pdf
    • http://warthogmarinellc.com/uploads/1/3/0/6/130621025/roxepawivesibop.pdf
    • http://tomorrowclothing.net/uploads/1/3/0/4/130478205/8497bf8bd2.pdf
    • http://quyhuy.com/uploads/1/3/0/4/130488574/nefukakanagiv.pdf
    • http://24baltimore.com/uploads/1/3/1/4/131453048/butel.pdf
    • http://shinerunnercustoms.com/uploads/1/3/0/6/130620758/ravamobefiruritenit.pdf
    • http://lillichart.com/uploads/1/3/1/6/131606597/4379912.pdf
    • http://archangelsmontreal.ca/uploads/1/3/1/4/131482882/3815444.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cfc.bin
2e236e7d63c734effbea4ce5cdbeedb3888f93821f404f35b0864483894ff905		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFC 10292 bytes

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