Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1e1331e793c3b76…

MALICIOUS

PDF

49.6 KB Authoring application: Mobipocket Creator
MD5: 6c9ef84ce17a671413ecf322b7c83508 SHA-1: 65fd83c2a9e5eef8e2f5d04190d886b1306625ca SHA-256: f1e1331e793c3b7674a351923970d050e9ed93951bf32631913ebec7c99ea8d5
120 Risk Score

Malware Insights

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

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, often used for SEO manipulation or to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to phishing or traffic redirection. 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://leadershipmartialartsacademy.com/uploads/1/3/0/5/130542948/gujikotakepe-zubitatunalo-vifum-nigurigor.pdf
    • http://nano-technique.com/uploads/1/3/0/5/130539818/zefalikozutokav.pdf
    • http://ellisroadpde.com/uploads/1/3/0/6/130605069/gujexaw-sovejonororufu-jepiganifume.pdf
    • http://kylekeenanracing.com/uploads/1/3/0/6/130621374/74263bf639.pdf
    • http://morris-imports.com/uploads/1/3/0/6/130621870/bekezop.pdf
    • http://murraysfools.com/uploads/1/3/0/2/130288363/2298771.pdf
    • http://wusof.discomfited-usages.com/uploads/2020/01/29/temenavemuk.pdf
    • http://starstuffwithstuartgary.com/uploads/1/3/0/4/130483872/nulagivamokojawinux.pdf
    • http://cooksinheels.com/uploads/1/3/0/6/130622036/b34b02c13ee3da.pdf
    • http://amazonaskitchen.com/uploads/1/3/0/5/130590355/f8f994e20.pdf
    • http://referenceobscura.com/uploads/1/3/0/5/130588332/fatad_totezoxatup.pdf
    • http://like2read.blog/uploads/1/3/0/8/130814407/bisexizedo-nawezezodawiz-xebabit-jameguv.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/6/130639363/130639363.html#thakur+prasad+calendar+2020+pdf+in+hindi

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001361.bin
59c4d5a1ec31947d9b3e8c62fc3a5877b8ab9b6deb6575e9bd4c9afe84a9a7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1361 7356 bytes
font_01_sfnt_off00005bc6.bin
288ae948c9c40c068fa73e791fab6da0ed46d16c100bdf6e4cd6101c6f4e723a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC6 8832 bytes
font_02_sfnt_off000072a8.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72A8 2600 bytes
font_03_sfnt_off00007b36.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B36 16036 bytes

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