Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2011b238760e846…

MALICIOUS

PDF

40.8 KB Created: 2020-03-27 12:42:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 154ce106ac3f3158019509fc33e32bcb SHA-1: 95bcd5d6c37ecbf5900cb70a60ab1648d72a975c SHA-256: f2011b238760e846a9d1343366dab422d7a99db47c8ac7a5b3e189cbed17cd40
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also strongly indicated maliciousness. The primary URL found in the document body is http://grupoforrajeroxalos.net/uploads/1/3/1/3/131398491/131398491.html#god+is+a+verb+rabbi+david+cooper. This suggests the document is part of a link farm or SEO poisoning campaign, potentially leading to malicious content or phishing pages.

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://grupoforrajeroxalos.net/uploads/1/3/1/3/131398491/131398491.html#god+is+a+verb+rabbi+david+cooper
    • http://highercallingentertainment.com/uploads/1/3/0/5/130544226/6055740.pdf
    • http://milanchurch.com/uploads/1/3/0/4/130478004/871c9.pdf
    • http://dtwapparel.com/uploads/1/3/0/5/130545480/1c82b9e64375c.pdf
    • http://myreframe.com/uploads/1/3/0/4/130489343/49ce432a74b5c.pdf
    • http://msjsport.net/uploads/1/3/0/2/130287295/xidefosuju.pdf
    • http://coachmex.com/uploads/1/3/0/4/130483478/18d8ba4f.pdf
    • http://www.ogballers.org/uploads/1/3/0/2/130270946/a0e72.pdf
    • http://whittierboulevard.com/uploads/1/3/0/6/130640029/fusezowonetubut.pdf
    • http://chelseajeanblog.com/uploads/1/3/1/1/131164549/xekatoganex.pdf
    • http://naufalsamudra.com/uploads/1/3/0/5/130539072/8802364.pdf
    • http://ccsboutique.ca/uploads/1/3/0/7/130775080/9357194.pdf
    • http://www.joyceaudy.com/uploads/1/3/0/8/130814124/99ad500e.pdf
    • http://racelandcr.com/uploads/1/3/0/4/130489247/wajobodejuxamo.pdf
    • http://hotwiretechnologycenter.com/uploads/1/3/0/6/130620305/nidagedutawunutunuvi.pdf
    • http://rhythmknitsyarn.com/uploads/1/3/0/5/130539049/8877319.pdf
    • http://3kalleckshomeservices.com/uploads/1/3/0/6/130620828/jotiposililu-tewisafug-xodepisevif-sositid.pdf
    • http://edxgraphics.com/uploads/1/3/0/3/130323705/memivil.pdf
    • http://nordbygdahandball.no/uploads/1/3/0/4/130436306/5030173.pdf
    • http://campchow.net/uploads/1/3/0/4/130476944/mubidiwuzawep.pdf
    • http://bevsbibelots.com/uploads/1/3/0/4/130490117/pojixokade_fuxotevubote_musakakadikusi_zeropavojugexu.pdf
    • http://coalhillminingcompany.com/uploads/1/3/0/5/130539738/soragigewoteseb.pdf
    • http://myseasponge.com/uploads/1/3/0/8/130813819/7dc68aee2a668.pdf
    • http://nationalpoolinspection.com/uploads/1/3/0/3/130379398/daliwumefun.pdf
    • http://centennialtreeservice.net/uploads/1/3/0/6/130603903/tapanimupomov_pamixedila_podogan.pdf
    • http://centennialtreeservice.net/uploads/1/3/0/6/130603903/tapanimupomov_pami
    • 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_off00007761.bin
266dcca4e10f4d7d28f1b778570c59864068dce0e26a9701f7db5119dfc3282c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7761 7708 bytes

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