Malicious PDF — malware analysis report

Static analysis result for SHA-256 538160f27ce6caff…

MALICIOUS

PDF

35.2 KB Authoring application: Poppler-utils
MD5: f9912667fbf004a1a263d91953799226 SHA-1: 95410e1fdd092145170b7d1dd007dde1a62db9b3 SHA-256: 538160f27ce6caff42b809c75d9035495626c8cfc05bebdb5d23bd896964e64e
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection for Pdf.Phishing.TtraffRobotInstall-7605656-0. The embedded URLs suggest a phishing or malware distribution campaign, aiming to lure users to download further malicious content. No scripts were extracted from this sample.

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://agencebreizstore.com/uploads/1/3/0/5/130542770/nomajozarogoja_gusuzofawoduwo_sodepux_zomusasozi.pdf
    • http://dekosevo.kjkjjj.com/uploads/2020/01/29/6766733.pdf
    • http://mikeshurig.com/uploads/1/3/0/6/130639157/5e6831303a56b.pdf
    • http://cesartechnologiesltd.com/uploads/1/3/0/3/130323286/e3dc56.pdf
    • http://bindiyaaravandekar.com/uploads/1/3/0/4/130489706/losexobubu.pdf
    • https://kosenixevozu.weebly.com/uploads/1/3/0/5/130588872/filubapagejexiw.pdf
    • http://zimushki.ru/uploads/2020/01/29/a046d4b2.pdf
    • http://akhnasemi.com/uploads/1/3/0/6/130603815/3c1f96.pdf
    • http://stadiacatering.com/uploads/1/3/0/5/130550814/da5bf00e697eed.pdf
    • http://beatrizgonzalezmusic.com/uploads/1/3/0/2/130287847/dolupemizifubugepam.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/2/130271207/130271207.html#present+perfect+and+past+simple+exercises+intermediate

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012ff.bin
bd71e27fe098432cb471c45d6566087bb0b2522bfc6cc9b85c16733c20013fbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12FF 8480 bytes

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