Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8fd24aa3947cc03…

MALICIOUS

PDF

37.8 KB Authoring application: Scribus
MD5: 09b416c7dbbb80ca77d458336e3fa016 SHA-1: 14191d8b3ecaa854b8921cce2ab43520924a0c16 SHA-256: b8fd24aa3947cc0308b7594bef755d7ccd6057ab9fdd2522a14e658bdac35207
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files hosted on various domains. This behavior is indicative of a link farm or a redirection scheme, as flagged by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection further confirm the malicious nature of the document. The primary attack pattern involves luring the user to click on these links, which likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • ClamAV: Pdf.Dropper.Agent-7878271-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7878271-0
  • 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://leadsolo.com/uploads/1/3/0/3/130323957/topazisi.pdf
    • http://xrdsfaith.com/uploads/1/3/0/8/130814337/9d5fd9d247f0304.pdf
    • http://nw4.me/uploads/1/3/0/7/130775274/9842968.pdf
    • http://spookumout.com/uploads/1/3/0/5/130551198/rajoperenub.pdf
    • http://www.gtpowerservices.com/uploads/1/3/0/6/130639852/2782498.pdf
    • http://tiktakti.com/uploads/1/3/0/8/130814774/bb11d.pdf
    • http://assistancedogassociation.com/uploads/1/3/0/5/130543057/pidol.pdf
    • http://www.teamtrees010.nl/uploads/1/3/0/5/130590322/sojewotev.pdf
    • http://neverstripaflooragain.com/uploads/1/3/0/6/130639685/8374959.pdf
    • http://coinoplaundryparts.com/uploads/1/3/0/5/130548039/zuduguwede.pdf
    • http://need4relief.com/uploads/1/3/0/4/130476502/moxeginafuboren_gikogof_loxejokep_vazolejitoxu.pdf
    • http://christianmchoi.com/uploads/1/3/0/5/130588653/lodemi-laluzekorapuro-serodufa.pdf
    • http://syncopatedance.com/uploads/1/3/0/5/130551125/6519883.pdf
    • http://oconnorcoachingservices.com/uploads/1/3/0/2/130288391/bufakuwigefoxil-vinudire.pdf
    • http://chaletalpemassif.com/uploads/1/3/0/6/130604617/44294101f.pdf
    • http://menschwork.com/uploads/1/3/0/4/130488429/vaxanira.pdf
    • http://ooredoopalestine.net/uploads/1/3/0/3/130313066/pikowukeres.pdf
    • http://spanglishprints.com/uploads/1/3/0/5/130550828/fe2c227d5c26c0c.pdf
    • http://starboardopportunitypartners.com/uploads/1/3/0/4/130477414/zapepakujokoxel-nebujudifedadim-jedexebejuweke-zomukalop.pdf
    • http://mindstate.store/uploads/1/3/0/2/130272325/4e6c9fb280b99.pdf
    • http://zo2yd.slpny.com/uploads/1/3/0/5/130539783/130539783.html#apogee+jam+96k+review

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000318a.bin
ed0eeca38c74bfcdbfabbe9fac697d98b7a8fef6eb2bd4c97a989da8671480ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x318A 8744 bytes

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