Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d5445d31e14a53d…

MALICIOUS

PDF

76.5 KB Authoring application: ImageMagick
MD5: 14a4ce355c5fa5075ff86d61c49b9d39 SHA-1: 999d2c3867976f974d5f8813552a173c026a8055 SHA-256: 8d5445d31e14a53d668a58d8f956385e1f94719185013eafc160d9297adea3bf
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique commonly used for SEO manipulation or to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine a more specific attack pattern beyond the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://excessivelydiverting.org/uploads/1/3/0/7/130739845/8833926.pdf
    • http://adjustablebedinabox.com/uploads/1/3/0/3/130312913/bujizelekeruw.pdf
    • http://divergencecorp.com/uploads/1/3/0/5/130541208/d8fb2b6005997d.pdf
    • http://morphsparchd.com/uploads/1/3/0/4/130476348/vojifa_nixufaroxusanok_baludu_timupozol.pdf
    • http://grin-and-tonic.com/uploads/1/3/0/5/130550714/9474809.pdf
    • http://bitsbridlesbrambles.com/uploads/1/3/0/2/130289587/4232031.pdf
    • http://purrfectpurr.com/uploads/1/3/0/7/130776327/jumal.pdf
    • http://autodiscover.brazosvalleycheese.com/uploads/1/3/0/4/130483394/lojugufovagaw.pdf
    • http://emailmarketing507.com/uploads/1/3/0/7/130775634/9468068.pdf
    • http://blocktekcapital.com/uploads/1/3/0/5/130590138/622306.pdf
    • http://mail.fosterenterprises.com/uploads/1/3/0/7/130740466/lupoteket-rofegud-pikotoruve-gaxonepijigad.pdf
    • http://newmanstage.com/uploads/1/3/0/5/130545565/jobezotolaguw-kedinu-gunixi.pdf
    • http://defenselogisticsalternatives.com/uploads/1/3/0/6/130621015/9330944.pdf
    • http://nwwriters.com/uploads/1/3/0/7/130774990/8503313.pdf
    • http://newsmandan.net/uploads/1/3/0/6/130640059/4037200.pdf
    • http://pof-freeaddcalls.com/uploads/1/3/0/2/130272636/d343e89.pdf
    • http://mosaicwellington.org/uploads/1/3/0/7/130738722/rakag-varemosag-nakitudutezi-lonixozegidan.pdf
    • http://i-exp.net/uploads/1/3/0/6/130639027/5664cc7f83479.pdf
    • http://www.thewheelman911.com/uploads/1/3/0/6/130620375/rorun-sivirokixuril.pdf
    • http://526ri.salon225.com/uploads/1/3/0/9/130969735/130969735.html#govind+damodar+stuti+download

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008500.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8500 1388 bytes
font_01_sfnt_off00008fdb.bin
351f5ab0bcb9c32ee9c0a6b8ed567d66c16eba720264266b21913ba630808507
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FDB 19256 bytes
font_02_sfnt_off0000c1cd.bin
1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838
pdf-font-stream PDF embedded font (sfnt) at offset 0xC1CD 2652 bytes
font_03_sfnt_off0000cdc7.bin
bd54de8b28f5afc63394bfad79d6ebf2e128443e601f4623e658b1d49a7a665a
pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC7 8060 bytes