Malicious PDF — malware analysis report

Static analysis result for SHA-256 76043f0205fa9f3e…

MALICIOUS

PDF

43.6 KB Created: 2020-04-02 11:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c8f88e3ec8f7ec9b1ecc4c03b53b866f SHA-1: 8b95290e68e4ba291803f76256b7a97f8472fa8b SHA-256: 76043f0205fa9f3e33a89b05f40538c61454b4ef6d69a309b5a825087540d8bd
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a coordinated effort to distribute content or manipulate search engine results. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves directing users to a network of external resources.

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://ereksitahanlama.com/uploads/1/3/1/4/131452823/131452823.html#caracteristicas+generales+del+movimiento+de+vanguardia
    • http://davidseen.com/uploads/1/3/0/8/130814457/lejojuguwat-lufaxuv-powudibazin-zosamuvafeb.pdf
    • http://stokesmetaldesign.com/uploads/1/3/0/6/130603776/xisivo.pdf
    • http://wrappedupinlove.com/uploads/1/3/1/4/131407281/1e95db49a525b.pdf
    • http://doublehaulmt.com/uploads/1/3/0/6/130639413/72186fc24.pdf
    • http://journeytoanewstart.org/uploads/1/3/0/5/130551653/3081725.pdf
    • http://btanstl.com/uploads/1/3/0/7/130775784/dugijoravizime_jusofe_xasan.pdf
    • http://meganmcduffie.com/uploads/1/3/0/4/130488969/d41533127293c0.pdf
    • http://emmeseecole.com/uploads/1/3/0/2/130287553/witemokopi.pdf
    • http://desertridgeart.com/uploads/1/3/0/5/130589299/123b6cf8906ee.pdf
    • http://djeduardoalves.com/uploads/1/3/0/6/130639583/gidunonok_wajoluvotakup_neguvug.pdf
    • http://featherfallsmobileestates.com/uploads/1/3/0/2/130289262/7291604.pdf
    • http://prestigeservicesolutions.com/uploads/1/3/1/3/131381411/digepamugaz.pdf
    • http://triplelunagoddess.com/uploads/1/3/0/3/130379676/jorog_repixesugetasi.pdf
    • http://bargeacbll.com/uploads/1/3/0/6/130620626/foxobiwaga-gotosav.pdf
    • http://rbarlawrence.com/uploads/1/3/1/3/131379340/b69462986cea86.pdf
    • http://churchweddingspaphos.com/uploads/1/3/0/3/130323220/pagiretefetomake.pdf
    • http://aeropac.vip/uploads/1/3/0/3/130324420/028a54.pdf
    • http://bethevibration.com/uploads/1/3/0/3/130323601/navunetipa_niximox_lejakisowub.pdf
    • http://preeminentglobalofdcllc.com/uploads/1/3/0/3/130379285/4579118.pdf
    • http://rejuveclinica.com/uploads/1/3/0/6/130604375/8500482.pdf
    • http://whitestractorparts.com/uploads/1/3/0/7/130739449/jeberi.pdf
    • http://savethesweeneys.com/uploads/1/3/1/0/131070456/1e5482371afef5.pdf
    • http://vytlz.com/uploads/1/3/0/6/130621435/fc8961140df55c.pdf
    • http://happyhaunts.art/uploads/1/3/0/6/130621060/pugivopojifadus.pdf
    • http://thetslawfirm.com/uploads/1/3/1/0/131070713/6716864.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_off00007dcf.bin
47bb646ac13f91eb7a9eb47bddffd12a8cabec9eff2e48697aff403a996fdc4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCF 8832 bytes

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