Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2a845c41e238fe9…

MALICIOUS

PDF

35.0 KB Authoring application: LibreOffice
MD5: b31f69b5aaaa41093c5e31a8ae429774 SHA-1: 5986463824ca19761cd2c1eceda4c06d91c24311 SHA-256: f2a845c41e238fe9d8dfa3036dedfc339f158b00416490cfa4483cf2053d39f9
150 Risk Score

Malware Insights

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

The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links to external PDF files, suggesting a link farm or redirection scheme. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output further support a malicious classification. The embedded URLs are likely used to host 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://mrsmoothbeatz.com/uploads/1/3/0/6/130604884/d1dfc.pdf
    • http://reseautrans.net/uploads/1/3/0/6/130621765/955dd2eecff8.pdf
    • http://picktheband.com/uploads/1/3/0/6/130621554/db3c73d7c87b9.pdf
    • http://mycubbylife.com/uploads/1/3/0/5/130589220/japavonifusemexorap.pdf
    • http://varconstruction.net/uploads/1/3/0/9/130969496/nunajev_sarudepago.pdf
    • http://biggdaddysphillysteakhouse.com/uploads/1/3/0/6/130620627/2194941.pdf
    • http://myfish.tw/uploads/1/3/0/4/130476130/wokusejak-fowokik-vubipuvolezox-gegidosaket.pdf
    • http://miamiflpressurewashing.com/uploads/1/3/0/5/130551651/6966050.pdf
    • http://www.wisdomsportswear.com/uploads/1/3/0/2/130288402/fetiximivorejurevu.pdf
    • http://sourceenergyrecords.com/uploads/1/3/0/6/130603944/280e2e237c.pdf
    • http://fazioandstone.com/uploads/1/3/0/6/130639369/130639369.html#zn+stain+for+afb+negative

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003140.bin
963818ce58d38a76be93c4fe78608a81cb37967a2d2742d18f4a8c7e82dfadcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3140 8688 bytes

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