Malicious PDF — malware analysis report

Static analysis result for SHA-256 5917151d5c972200…

MALICIOUS

PDF

48.3 KB Authoring application: Mobipocket Creator
MD5: b80992b1c16e5f529854924cae824e5e SHA-1: c97d38e1df17c72c3a0644688ca6484dc9f02c22 SHA-256: 5917151d5c9722007162937cd641f3f1bc82fc55c7f85109211b7e09582ca4f6
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a machine learning classifier indicated a high probability of maliciousness. Static analysis revealed a link farm containing multiple external URLs, suggesting a phishing or content distribution scheme. The document body contains garbled text and embedded URLs, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://acupuncture4pets.ca/uploads/1/3/0/6/130639254/7904192.pdf
    • http://nathanbarot.com/uploads/1/3/0/5/130588964/9668351.pdf
    • http://annesaariketo.com/uploads/1/3/0/5/130589121/setubetoxazas.pdf
    • http://drpatty.net/uploads/1/3/0/7/130776886/130776886.html#aplikasi+videoshow+pro+apk+gratis

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fcb.bin
3481077c6dcab14bd6789e195902e6139bb6cea970905cd7e71c1563e5994a45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB 8936 bytes
font_01_sfnt_off00006064.bin
31fec840165127d9f22598f8b792098e0dc389a877897444b12b1494467ce0b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6064 4284 bytes
font_02_sfnt_off00006d38.bin
c6c28444bcd94379862b6cc7f8cfcdbcdaeb026857ccdb099d87626a561054a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D38 16092 bytes
font_03_sfnt_off000081ad.bin
50224c6c483bfa86a10f62efd7baa2c756f8036c0a911ebd537387e21b2fb6f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AD 2732 bytes

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