Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a009c5412fdf586…

MALICIOUS

PDF

63.0 KB Authoring application: Inkscape
MD5: 08a89c84f99422fdd31223e434cc415c SHA-1: 4c93d49f530103452be7f510425a595e33c96cdf SHA-256: 3a009c5412fdf58661a12902d566126952c79664c1371a5f7333070a35983d74
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of embedded URLs pointing to external PDF files, suggesting a link farm or redirection tactic. The primary heuristic indicates a 'PDF_SEO_LINK_FARM' with 22 external links, predominantly hosted on domains like 'allyourteeth.com'. This indicates a likely phishing or SEO poisoning attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://allyourteeth.com/uploads/1/3/0/7/130739786/dugezegina_gisorizis_watikinaloxilir.pdf
    • http://smcolife.com/uploads/1/3/0/4/130488698/6cc21068eeac18.pdf
    • http://ceramikerie.de/uploads/1/3/0/6/130639214/8434966.pdf
    • http://ketchikanwhales.com/uploads/1/3/0/6/130621276/ee8a92086.pdf
    • http://missperryseducationstation.com/uploads/1/3/0/4/130488615/fulavenibiviji_jinamok_kalut_duwiz.pdf
    • http://norwichladsabc.co.uk/uploads/1/3/0/5/130539373/nesadizan_kefetubel_devuluke_wupisuzajawud.pdf
    • https://daxivofe.weebly.com/uploads/1/3/0/4/130488304/1660862.pdf
    • http://zolotyyeglaza.weebly.com/uploads/1/3/0/5/130545932/kanumezufe.pdf
    • http://oasischronicles.com/uploads/1/3/0/7/130775858/6257363.pdf
    • http://superspysaucecompany.com/uploads/1/3/0/4/130477018/98867f4.pdf
    • http://donnezonline.com/uploads/1/3/0/4/130476525/5937531.pdf
    • http://2020blue.org/uploads/1/3/0/6/130639785/130639785.html#alcohol+detox+symptoms+headache

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001377.bin
bd1da38d2f543b07dfaaccd8f67ef121d604b5f79798464cd77411cb6af047d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1377 8228 bytes
font_01_sfnt_off0000b1a0.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1A0 16036 bytes

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