Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab5c9985acf670b…

MALICIOUS

PDF

37.3 KB Authoring application: Poppler-utils
MD5: cb705bcad26cb9edd05889b79d892b6c SHA-1: 9cbd12f458a73f5ee81fed1f3098940ad5e2ddba SHA-256: fab5c9985acf670b1dd8ae20abfb7b168c088c1b3a9af5ce4e8ded4595559088
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule, indicating a large number of external links. The ML classifier also assigned a high probability of maliciousness. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this. The embedded URLs point to numerous PDF files hosted on various domains, suggesting a link farm designed to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://nextdeavor.net/uploads/1/3/0/5/130543333/fegumuxudas.pdf
    • http://experienciachile.com/uploads/1/3/0/5/130590047/zeweruroset-dovigadililipu.pdf
    • http://judehayes.com/uploads/1/3/0/3/130323322/buxavaverezazoleno.pdf
    • http://mymediaportfolio.com/uploads/1/3/0/5/130539612/5470080.pdf
    • http://clearlaketherapy.com/uploads/1/3/0/7/130776366/7953318.pdf
    • http://workerdesigns.com/uploads/1/3/0/5/130545333/5250930.pdf
    • http://composers.directory/uploads/1/3/0/6/130620438/dadexijotuve.pdf
    • http://cbenedict.com/uploads/1/3/0/5/130550812/pegogetudenu.pdf
    • http://minimalwaste.net/uploads/1/3/0/6/130621622/tavetupubato.pdf
    • http://aperitif-sticks.at/uploads/1/3/0/7/130739247/1522569.pdf
    • http://hairbyjerr.com/uploads/1/3/0/6/130622022/dapevi-vovilizipuri-pukalepupawifi.pdf
    • http://hongkongheadshop.com/uploads/1/3/0/6/130604488/3802619.pdf
    • http://thepolarroute.com/uploads/1/3/0/5/130548070/6326890.pdf
    • http://natecleveland.net/uploads/1/3/0/6/130639628/2117575.pdf
    • http://talesfromsixthgrade.com/uploads/1/3/0/6/130621072/9710628.pdf
    • http://thecouplesplacesa.com/uploads/1/3/0/3/130323424/tokatugejakudusaf.pdf
    • http://simplereply.com/uploads/1/3/0/6/130621826/vegorujegolole-weworida.pdf
    • http://116pinehill.com/uploads/1/3/0/6/130622103/ad3bebe21e4c.pdf
    • http://newstylemarket.com/uploads/1/3/0/2/130288915/130288915.html#acid+reflux+diet+plan+recipes
    • http://mymediaportfolio.com/uploads/1/3/0/5/130539612/5470080.pd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000322d.bin
9ed0933353412f8a11710eb49fd92ea2d67a46026cc28468124a2ad5bd5c3ab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x322D 8700 bytes

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