Malicious PDF — malware analysis report

Static analysis result for SHA-256 035bf342d868e47f…

MALICIOUS

PDF

48.4 KB Authoring application: Inkscape
MD5: e636b4dfac1d4c3364af0eca8ac18974 SHA-1: a57d01a59660bd91917dcc913ea392aeb23934b2 SHA-256: 035bf342d868e47fb9990a6c5f070a128d02180fbac0ed5aae1281b596b95e5b
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, a technique often used for SEO manipulation or distributing further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it acts as a dropper or redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://yawmag.com/uploads/1/3/0/2/130288761/zinazufu-rixemudulonivu.pdf
    • http://rorosglassartandcrystalskulls.com/uploads/1/3/0/5/130590431/taxupoluron.pdf
    • http://wit-isms.com/uploads/1/3/0/6/130639407/b4f43.pdf
    • http://mychickenman.com/uploads/1/3/0/7/130740412/velukadokot_furogexilotur_letodixizofu_febodu.pdf
    • http://chinese.genderinsanity.com/uploads/1/3/0/6/130639419/6693284.pdf
    • http://covingtoneconomymeatmarket.com/uploads/1/3/0/5/130547812/detojuwope.pdf
    • http://izbudgeta.ru/uploads/2020/01/28/9f653a7cdf2b422.pdf
    • http://weddingcakesbrisbane.net/uploads/1/3/0/5/130590716/ratumisekev.pdf
    • http://padeljobs.org/uploads/1/3/0/6/130605472/binigudigibur.pdf
    • http://misssoutheastpageantry.us/uploads/1/3/0/6/130620194/130620194.html#abordagem+triangular+no+ensino+das+artes+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001301.bin
b9ea4f58079bc8acca4cd1902687b6a49a44599b51da08158e88451b1e009a1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1301 10580 bytes

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