Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08cd34f9b889c09…

MALICIOUS

PDF

38.7 KB Authoring application: Smallpdf Desktop
MD5: 1daf74e2d9700bedb38e1e5992d7f4ee SHA-1: 79c8a6e7cbcf3a04babc5cbb5155a00319445084 SHA-256: b08cd34f9b889c092520f0a7fa9ce21ee822e8733ad3a32a1b61286163ae80b4
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of a large number of external links, suggesting a phishing or content distribution scheme. The embedded URLs 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.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://bedbugssacramento.org/uploads/1/3/0/2/130271207/c0fc190a.pdf
    • http://mindbodymovementarts.com/uploads/1/3/0/4/130436125/fobuvapunemomuwo.pdf
    • http://offpeaktraining.net/uploads/1/3/0/2/130270938/tonasedinawiwur-duwopiwifam.pdf
    • http://manexpacheco.com/uploads/1/3/0/2/130289296/pilanuw.pdf
    • http://bitcoinersnow.com/uploads/1/3/0/6/130621839/jajed_niwuji_puxanezulifir.pdf
    • http://myfavoritegoodies.com/uploads/1/3/0/3/130313010/fipotupukazapav.pdf
    • http://scireinke.com/uploads/1/3/0/2/130271111/banakitimix-tanagugewofitej-gimikoboxatage-zekexirif.pdf
    • http://acdavisbass.com/uploads/1/3/0/6/130604979/gawijukifitalonoxu.pdf
    • http://nordium.net/uploads/1/3/0/6/130620576/wijeruvizuvez-xasagetagupa-saraxu-finegolub.pdf
    • http://policetrailer.com/uploads/1/3/0/7/130739927/130739927.html#penguin+books+logo+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000144d.bin
f04d259a0892513ce7652f3a429774d218e1768f440a852f81aa7b8c8492c23e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x144D 9092 bytes

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