Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fd77a024e8c38ce…

MALICIOUS

PDF

37.4 KB Authoring application: OpenOffice Draw
MD5: 6c5beb2b21d1ba45042d55196e1cd9ad SHA-1: 988df07eb5a5f71debabab103758c6f6f3049d63 SHA-256: 4fd77a024e8c38ce6f8796b5973ce32f457d0a5ed9fa7258ea7504805ee4bf8d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm designed to distribute malicious content or engage in SEO-based phishing. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious classification. No scripts were extracted from this sample, and the document body contained mostly garbled text.

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://www.horsepowerhouse.net/uploads/1/3/0/3/130324170/6860037.pdf
    • http://www.rinconlawgrouplaw.com/uploads/1/3/0/5/130550824/8288039.pdf
    • http://edensdale.org/uploads/1/3/0/6/130620737/jegobejijirelotozofe.pdf
    • http://bebelechecln.com/uploads/1/3/0/7/130739474/malidegubusi.pdf
    • http://hostmaster.biglaurelfoods.com/uploads/1/3/0/6/130620823/fasikesivubusi-pivogupove.pdf
    • http://northshoreconstructionchriskanter.com/uploads/1/3/0/4/130483614/lubogemuk_zimive_xipiforo_musidup.pdf
    • http://jminguet.com/uploads/1/3/0/5/130542964/makutax.pdf
    • http://risemexico.org/uploads/1/3/0/2/130288456/4525827.pdf
    • http://rensiesespensie.co.za/uploads/1/3/0/7/130739809/papadakizivo.pdf
    • http://www.59sportstradingco.com/uploads/1/3/0/8/130874012/pebimirazibe.pdf
    • http://cpanel.grewbuilding.com/uploads/1/3/0/6/130620951/dugubarox-vubesutesuxu-juwezovaka.pdf
    • http://kulshanclayworks.com/uploads/1/3/0/6/130639410/2060916.pdf
    • http://thegridironshow.com/uploads/1/3/0/2/130288502/retev-pupiwopevo-pibarufiduwaza.pdf
    • http://anzulewicz.com/uploads/1/3/0/4/130476322/ledidumitizega.pdf
    • http://wenji.bpmtc.com/uploads/1/3/0/4/130477192/130477192.html#absolute+value+inequalities+exercises
    • http://risemexico.org/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000021a1.bin
4bc316074ab7a945bfab345755761abf3c0c30bbefcbffa3ce2a779be7417175		 pdf-font-stream PDF embedded font (sfnt) at offset 0x21A1 16144 bytes
font_01_sfnt_off00003941.bin
be737007dfad40692b06b7ff56b28ab621fbb3daa393813e3a4ebc7ed21f8d97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3941 7444 bytes

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