Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b2857bd5150d1b2…

MALICIOUS

PDF

41.5 KB Authoring application: Pdftk
MD5: 7743b2c80ee307d2b7d75bec4d40cd74 SHA-1: ef5f3cc0be3c2118b83dd619b6481ea3902dffae SHA-256: 5b2857bd5150d1b28b9e407a30ba397ec321ca16011f5db96e83f11ba993eefa
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or redirection attempt. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier further support its malicious nature. The embedded links likely lead to malicious websites designed to host further payloads or conduct phishing operations.

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://momentcapture.net/uploads/1/3/0/3/130379291/jaxofesuzege_rijogodadij_gijuw.pdf
    • http://tjmcauley.com/uploads/1/3/0/4/130475918/1b3e22b82e1.pdf
    • http://slonetelecom.com/uploads/1/3/0/3/130324037/2413920.pdf
    • http://mrplugs.com/uploads/1/3/0/2/130287285/5644749.pdf
    • http://criticsdarling.com/uploads/1/3/0/2/130289653/c1bc7affbb6.pdf
    • http://georgebeaumont.com/uploads/1/3/0/5/130588843/6539436.pdf
    • http://railandrivermarket.com/uploads/1/3/0/4/130478551/2f8a26b14b.pdf
    • http://adenta.bg/uploads/1/3/0/6/130621401/vonewud.pdf
    • http://dolack.org/uploads/1/3/0/8/130813618/2846920.pdf
    • http://promarkpaintingservice.com/uploads/1/3/0/5/130539260/fewoso-masemurakopo-xatotedo.pdf
    • http://rhondaatrottministries.com/uploads/1/3/0/3/130313286/warar_vimofa.pdf
    • http://beyondlightbeats.com/uploads/1/3/0/3/130323914/sufeporobuzufelu.pdf
    • http://hotels-hanoi.net/uploads/1/3/0/4/130476145/b2f30fb6.pdf
    • http://whitebeamphotography.co.uk/uploads/1/3/0/6/130604933/wemuvitezuw.pdf
    • http://almosteverything6dollars.com/uploads/1/3/0/6/130604815/xudatuxid_raxizasigi_bulitififa_kodokesage.pdf
    • http://firstbaptisteudora.com/uploads/1/3/0/5/130588201/8679424.pdf
    • http://ragfirearmsllc.com/uploads/1/3/0/7/130776852/0e3b895813037dd.pdf
    • http://brokerjana.com/uploads/1/3/0/6/130605399/pumorok.pdf
    • http://collectivekick.com/uploads/1/3/0/2/130287221/1663002.pdf
    • http://twyfi.org/uploads/1/3/0/7/130739978/linax.pdf
    • http://capefearforge.com/uploads/1/3/0/6/130639714/130639714.html#allianz+travel+insurance+partner+login

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003e34.bin
8f6577beb7e5673bef270fa170d1f52785a9f7cea93dfc3820d35c04da7887ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E34 9620 bytes

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