Malicious PDF — malware analysis report

Static analysis result for SHA-256 92506d62a4d605ed…

MALICIOUS

PDF

39.1 KB Created: 2020-03-11 08:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c63e82b60914e6f04133c4592958f7c9 SHA-1: 7c3f14e50a1b7b81a843d57aa91a0e6803ec118f SHA-256: 92506d62a4d605ed6706baa583d04d2b0a11e441316077ea5c8efda6b4350c37
94 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection mechanism. The ML classifier also strongly indicated maliciousness. The primary purpose appears to be directing users to a network of external websites, potentially for SEO manipulation or to host further malicious content.

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://coachingsportifpremium.net/uploads/1/3/0/7/130776351/130776351.html#ganga+action+plan+wikipedia+in+hindi
    • http://leadmama.net/uploads/1/3/0/6/130640141/4394985.pdf
    • http://visitsmithlake.com/uploads/1/3/0/6/130640209/zexamuduxonefal_donedokadojojuf_fapema_jokikukelanoz.pdf
    • http://cpanel.voluntarysectorgateway.org/uploads/1/3/0/9/130969045/gubafoxo-folanas-kelepe.pdf
    • http://glazenwasserijstrak.nl/uploads/1/3/0/7/130739705/kataserufaniwe.pdf
    • http://gemdes.space/uploads/1/3/0/3/130323469/5147370.pdf
    • http://wavelengthcomic.com/uploads/1/3/0/4/130435781/zobiku-negukevivipa-ludufukozuli.pdf
    • http://www.5711southbayrd.com/uploads/1/3/0/7/130740592/wedujavodexuve.pdf
    • http://patsytminkcenterforbusinessleadership.org/uploads/1/3/0/5/130588942/6542285.pdf
    • http://rockchurchofthehighdesert.com/uploads/1/3/0/7/130775657/b5c16.pdf
    • http://www.subwaynewry.com/uploads/1/3/0/7/130776489/gesoruzelaguke.pdf
    • http://www.ageeth.com/uploads/1/3/0/2/130272851/8275516.pdf
    • http://ebbandflood.org/uploads/1/3/0/5/130588377/xenixala.pdf
    • http://kohno-corp.com/uploads/1/3/0/4/130476143/bifeniwon.pdf
    • http://eventkonzepte.ch/uploads/1/3/0/6/130620473/48d0ee9fc77.pdf
    • http://missionbaykohi.org/uploads/1/3/0/4/130488979/xotojarosefobi_vidolodejipat_kokexomanara_gikoriragi.pdf
    • http://paintedponypemftherapy.com/uploads/1/3/0/2/130288401/3c63c047749427.pdf
    • http://muvaso.fr/uploads/1/3/0/6/130621649/7477145.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_off00006edf.bin
3a9740be98c11d04cb7f3dc9a410926dfa8277e92b2db2936262aeec67c4c2a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDF 7820 bytes

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