Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe300e10428d20d0…

MALICIOUS

PDF

34.0 KB Authoring application: Nitro PDF
MD5: a506ef1da4d28d6d8f3fcf22ae23e609 SHA-1: 7a4b2a64648aac9dc463bbe15e9043e9fe5609b1 SHA-256: fe300e10428d20d0020cdb89d62a54548c194cd7dd6ac397ba61ca66f173700e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many pointing to suspicious domains, indicating a link farm or phishing attempt. The heuristic PDF_SEO_LINK_FARM specifically flags this behavior. The document body, though malformed, mentions 'Car payment worksheet excel', suggesting a lure. The primary malicious URL identified is http://yaremkospt.com/uploads/1/3/0/6/130640079/zupugesipegawod_xituguzu_nemawegogi.pdf.

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://yaremkospt.com/uploads/1/3/0/6/130640079/zupugesipegawod_xituguzu_nemawegogi.pdf
    • https://mugagofosuboluk.weebly.com/uploads/1/3/0/4/130478975/lasolova.pdf
    • http://rhsgirlsbasketball.com/uploads/1/3/0/3/130379117/2616658.pdf
    • http://prorealgame.ru/uploads/2020/01/28/fd620f02193.pdf
    • http://newenglandpowerlight.com/uploads/1/3/0/5/130589094/7ad1a.pdf
    • http://alexandraforsythermt.com/uploads/1/3/0/4/130489523/gexigunesumaz.pdf
    • http://maternity-depot.net/uploads/1/3/0/4/130476192/914191.pdf
    • http://wumetewito.topfloor.space/uploads/2020/01/28/runina.pdf
    • https://timusesapuzajen.weebly.com/uploads/1/3/0/3/130324331/lezakuwabunupipeju.pdf
    • http://printalluk.com/uploads/1/3/0/4/130488371/130488371.html#car+payment+worksheet+excel

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001248.bin
4139653a2c2410ad4a17bcce3502f5a5cd41d83c5c2fec447508e08f256ae273
pdf-font-stream PDF embedded font (sfnt) at offset 0x1248 8296 bytes