Malicious PDF — malware analysis report

Static analysis result for SHA-256 f690dc4be38c1055…

MALICIOUS

PDF

38.3 KB Authoring application: GIMP
MD5: 5f549ac01a2893ac21adf9ee4f006b64 SHA-1: 7cb8a719d775b958a3e41eb27350d563b6548975 SHA-256: f690dc4be38c1055332bb629f80e5a4cd4d495503b5e10587612c5bc6faa6ff8
120 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a PDF SEO link farm, containing numerous embedded links to external PDF files. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious classification. The primary attack pattern involves redirecting users through these links, likely to phishing sites or to download further malicious content. No scripts were extracted from this sample.

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://fundraising-career.com/uploads/1/3/0/5/130588789/4832671.pdf
    • http://hughheffner.net/uploads/1/3/0/5/130590561/a04446.pdf
    • http://mawitechsupport.com/uploads/1/3/0/8/130874612/5129346.pdf
    • http://ferrotrend.sk/uploads/1/3/0/3/130313054/cee1c51.pdf
    • http://pkflash.org/uploads/1/3/0/7/130738569/6719235.pdf
    • http://adoptme.info/uploads/1/3/0/7/130739686/fitovizirafefa-runuderewutabof.pdf
    • http://nchep2017.org/uploads/1/3/0/4/130483295/vatisagiz.pdf
    • http://ontherolljoplin.com/uploads/1/3/0/5/130546803/zatefewuruwirurifi.pdf
    • http://rusticscooterdesigns.com/uploads/1/3/0/5/130546880/kupinase_topogi.pdf
    • http://tierisch-tragbar.de/uploads/1/3/0/4/130483912/towamelodegokugat.pdf
    • http://allurlife.com/uploads/1/3/0/7/130775169/566bcaea45c.pdf
    • http://nutritionrxllc.com/uploads/1/3/0/5/130551925/61858fa.pdf
    • http://copperpotcreative.com/uploads/1/3/0/5/130588603/lizirinuxubam.pdf
    • http://mirasana.com/uploads/1/3/0/5/130547024/7231815.pdf
    • http://cbi-international.com/uploads/1/3/0/4/130483806/faf6a2e3f9d.pdf
    • http://f1fantasyseason.com/uploads/1/3/0/6/130639784/3171756.pdf
    • http://quotezooky.com/uploads/1/3/0/5/130538996/aeb2eba.pdf
    • http://www.redrockfencebuilders.com/uploads/1/3/0/5/130544754/130544754.html#chamonix+piste+map+2019

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000022e0.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22E0 16036 bytes
font_01_sfnt_off000039fa.bin
f9eb5e2c8d4f040e87d1909a6440af676b30b6ff91c22ebb1484a958c8746e64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x39FA 7744 bytes

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