Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d74b748a346514…

MALICIOUS

PDF

100.5 KB Authoring application: Mobipocket Creator
MD5: a57d86bf1dc05a8f91c346efdf4bc557 SHA-1: 85bc9b36bc0d659f86b4507a7b61c63cb97a5641 SHA-256: 79d74b748a346514a3f9801c6322dceb67429ad0a4d32a0ce4429e363fac803e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the embedded URLs themselves are the primary indicators of compromise and suggest a phishing or content distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://rawk-cbd.shop/uploads/1/3/0/7/130776060/fixipuzitewa-fozaxu-debibebofoxe.pdf
    • http://unkledesigns.com/uploads/1/3/0/4/130435990/zimojorupa_vewopigel.pdf
    • http://saulgodoy.com/uploads/1/3/0/7/130738973/2539648.pdf
    • http://eastelephant.us/uploads/1/3/0/7/130739627/56f1ce0d79c7.pdf
    • http://methodandcrew.com/uploads/1/3/0/4/130479008/97fd191a712f07.pdf
    • http://www.relocation-change.com/uploads/1/3/0/4/130436271/9177933.pdf
    • http://missionarytest.com/uploads/1/3/0/7/130740018/pavakolebadiravinel.pdf
    • http://northidahostrainedhorses.com/uploads/1/3/0/4/130483474/2cd8f26a24.pdf
    • http://anjaliseries.com/uploads/1/3/0/3/130313038/newimawiti.pdf
    • http://ninaceledonio.com/uploads/1/3/0/8/130815031/bevapilasexowo.pdf
    • http://purpleketo.com/uploads/1/3/0/5/130588437/pejodotavelap.pdf
    • http://www.sunnyhomesolutions.org/uploads/1/3/0/6/130621844/483be14de10a40.pdf
    • http://wikademia.org/uploads/1/3/0/8/130814845/rejizim.pdf
    • http://jukesbar.net/uploads/1/3/0/5/130546153/vejolajakabol-dobiletibikojux.pdf
    • http://txschooldirectory.org/uploads/1/3/0/3/130379111/276100.pdf
    • http://derig.host/uploads/1/3/0/4/130477661/65fa94f825302.pdf
    • http://narragansettgunclub.org/uploads/1/3/0/5/130543256/wugir_fasuminufukoj_lokebo.pdf
    • http://zziggy.com/uploads/1/3/0/8/130874362/zezegorakejijakubebu.pdf
    • http://brainstemtumorlady.com/uploads/1/3/0/5/130590208/352676.pdf
    • http://plotforsale.net/uploads/1/3/0/7/130738769/minofelif_bizebow_wadezukulune_vosenerikilepi.pdf
    • http://referralroulette.com/uploads/1/3/0/6/130639344/7fe59c229b1.pdf
    • http://www.wetalkradio247.com/uploads/1/3/0/7/130740189/jitave_gatoxokedaxowej.pdf
    • http://minhavidaminhasescolhas.com/uploads/1/3/0/2/130273748/8778666.pdf
    • http://audiofidelity.no/uploads/1/3/0/8/130874368/130874368.html#folic+acid+neural+tube

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000017c8.bin
15685a35b562c0f409de029a451c8c6d0562284cef701c2e38b3dfd2211299bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17C8 8156 bytes

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