Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cd479a4ad641203…

MALICIOUS

PDF

32.5 KB Authoring application: Inkscape
MD5: cd515026d243b0bc7610512997bb0f70 SHA-1: 83aaab3caa3f9e25679ef6a712a24a4fe6c2e5d8 SHA-256: 3cd479a4ad641203ae5a4ab75950f48155a6927ac96a5e81563e691cf9c485dc
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection tactic. The ClamAV detection and ML classifier further support its malicious nature. The document body, though heavily obfuscated, contains references to these external links, reinforcing the attack pattern. No scripts were extracted from this sample.

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://steamsolutionsinc.com/uploads/1/3/0/3/130312998/3e99b.pdf
    • http://thelicespecialist.com/uploads/1/3/0/7/130738837/navanorifes-nakav-zijakobaxuxadav-miwofosetoke.pdf
    • http://norfolkeventmedicalservices.com/uploads/1/3/0/5/130589002/3877170.pdf
    • http://intravireshealth.com/uploads/1/3/0/6/130605430/nalel.pdf
    • http://cpanel.startatravelbusiness.com/uploads/1/3/0/8/130813866/gudagidexogop.pdf
    • http://www.uciesl.com/uploads/1/3/0/7/130738631/rerevolagamesar-deteten-zidagatu-getakanafemana.pdf
    • http://skylinesjewellery.com/uploads/1/3/0/8/130813799/6917864.pdf
    • http://desideratainvestments.com/uploads/1/3/0/4/130435941/8670381.pdf
    • http://backcountry.blondinenterprises.com/uploads/1/3/0/6/130620917/fdd3e86a5ee.pdf
    • http://adentaitalia.com/uploads/1/3/0/5/130590287/dcd4474bcc7.pdf
    • http://northshoreconstructionchriskanter.com/uploads/1/3/0/6/130639915/benipojejaxuwu_pupefatedebe_kudasunewa_fotuwekijazox.pdf
    • http://fifthrowcenter.com/uploads/1/3/0/2/130287521/7026451.pdf
    • http://reelectjudgeericshepperd.org/uploads/1/3/0/6/130604892/watajonorixi.pdf
    • http://loskuatro20decalifornia.com/uploads/1/3/0/5/130539933/130539933.html#practice+worksheet+factoring+quadratics+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000025a2.bin
5f86bbb2844745d94e0e4beb31d596f7436fc91190b7588e7aa61d4098b88eff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25A2 7816 bytes

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