Malicious PDF — malware analysis report

Static analysis result for SHA-256 50445b0e2695eb6c…

MALICIOUS

PDF

74.3 KB Authoring application: PDFedit
MD5: 0d36b3a5ed7be7bcf6f00409d2d32396 SHA-1: 7a2be69d1f3772c9e580175a9c8992f75148550f SHA-256: 50445b0e2695eb6c1918e0ff534910ee594a81f26723339f7129a88c288c3cb7
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a common tactic for SEO poisoning and phishing campaigns. The document body mentions 'Whatsapp gold for pc', suggesting a lure to download unofficial or malicious software. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious download intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7977

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 https://weseveralu.weebly.com/uploads/1/3/0/5/130541384/rixepimebutadevegu.pdf
    • http://randhan.info/uploads/1/3/0/6/130604537/xafugasoxag_nufajode_lukof_fazoradilamoku.pdf
    • http://faintingpixel.com/uploads/1/3/0/2/130289290/ratafad.pdf
    • http://michaudwellness.com/uploads/1/3/0/2/130287875/130287875.html#whatsapp+gold+for+pc

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off0000d575.bin
0e3b6e838ae7d9f7e7572f6c3e611233e441ca3fefa00ebac88e323810a6a643		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD575 18472 bytes
font_00_sfnt_off0000117b.bin
196d98ed5a965169e54669fc1ecfc0641fc7981ef7fe09a066f6755fdd8bba61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117B 12892 bytes
font_01_sfnt_off0000709b.bin
03742b3af56d0894ab5df65dc3134d6d1f1537ecfbbc759efc3d5c9763d8381a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x709B 6908 bytes
font_02_sfnt_off0000865b.bin
bbd465158f88620f6b89bbc14fd4053a393fda34b464cf5d9625b9580ee6f51f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x865B 10240 bytes
font_03_sfnt_off00009c26.bin
868a07a666c5032a714f2e4aaba4b67d05df30d312a0dd626753a432c02aa9de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C26 8480 bytes
font_04_sfnt_off0000b274.bin
99c5193cfd8c036c1ae011c773f5a8e9b9247b36e3e6dc2fbfbefde82fa9f0cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB274 8400 bytes
font_05_sfnt_off0000c8f5.bin
4c93801c4768b9cf34ec960e4f85d683fdbe353adcc5a9e70f9f8b41c5e92470		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F5 3508 bytes

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