Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7b31fce43a98c77…

MALICIOUS

PDF

38.5 KB Authoring application: Scribus
MD5: 4b323b4b8e4afca7b0a48ca950be19b6 SHA-1: 19873a37b09d98c39ebfb699d56f2a608c901802 SHA-256: d7b31fce43a98c778d6f191c6404a8758e2270ddebe2eeecc7d545c6a47fe895
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute further malicious content. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall-7605656-0, indicating a phishing or traffic redirection purpose. The document body itself contains fragmented text related to educational exercises, which may serve as a lure to disguise the malicious nature of the embedded links.

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://solcreative.co.nz/uploads/1/3/0/3/130379104/9218591.pdf
    • http://o2fm.com/uploads/1/3/0/7/130739294/c6eb13c.pdf
    • http://actscommunitychurches.com/uploads/1/3/0/6/130604129/gifupim.pdf
    • http://mse265.com/uploads/1/3/0/3/130313458/jagalulopes-vovetobogo-zutuzob-samefitujafig.pdf
    • http://kcbbc.org/uploads/1/3/0/4/130483210/geliw.pdf
    • http://nocolonnoworries.com/uploads/1/3/0/5/130588370/95df917.pdf
    • http://carlocornelli.com/uploads/1/3/0/6/130639471/228b21cd0a020f.pdf
    • http://michenerlab.org/uploads/1/3/0/6/130604775/bunipivi-pelususol-mejolodugixaz.pdf
    • http://ramufa.onemagazin.ru/uploads/2020/01/28/wafojujetilodo.pdf
    • http://alex-kwon.com/uploads/1/3/0/2/130287842/6067900.pdf
    • http://interstatefive.net/uploads/1/3/0/3/130312998/paborokikej.pdf
    • http://skipcoryell.com/uploads/1/3/0/6/130621418/lukaginejumopa.pdf
    • http://nelslehtinen.com/uploads/1/3/0/3/130323767/130323767.html#physioex+exercise+4+activity+3

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000132c.bin
1f246db0a671908d7da225a32e4a928a3ee733bee48dde2e56a49a333c34697f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132C 8652 bytes

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