Malicious PDF — malware analysis report

Static analysis result for SHA-256 193187e5e99d7e10…

MALICIOUS

PDF

89.2 KB Authoring application: Solid Converter PDF
MD5: 6d5d42cf5646c205c2f2febb1d10b8c4 SHA-1: 144d767fe5242f8a5c7f507d0a6f50244cc9adf8 SHA-256: 193187e5e99d7e10f14ac71c60621112f4384c6abb51fb902051c4f391439fb2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, indicative of a link farm or redirection scheme. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall, suggesting a phishing or traffic redirection purpose. The ML classifier also strongly flagged this as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://newbethellg.com/uploads/1/3/0/7/130775402/tafelow_dufogini_navuvefukas_minupabovipe.pdf
    • http://benton-jp.com/uploads/1/3/0/6/130621546/a70046a.pdf
    • http://binoti.office-msk.ru/uploads/2020/01/29/dawozemufuvi-vovevada-xoxunu.pdf
    • http://newtrailpioneer.com/uploads/1/3/0/6/130621327/taduxa.pdf
    • http://motigol.beri-bolshe.com/uploads/2020/01/28/zubodoleperovik.pdf
    • http://mindandbodydallas.com/uploads/1/3/0/5/130550778/zoverixapurebe-tokalajituri.pdf
    • http://twinitron.com/uploads/1/3/0/6/130621063/tetomuvuzotezato.pdf
    • http://spwhoa.com/uploads/1/3/0/5/130588762/mekipiferip.pdf
    • http://metdonuts.com/uploads/1/3/0/7/130776725/bagoduf.pdf
    • http://jessicaspaulding.net/uploads/1/3/0/5/130589416/4369bdb60ca06.pdf
    • http://scouttroop79.com/uploads/1/3/0/2/130272426/wobitege-wonodosek-wekowasa-gubifadari.pdf
    • http://adoptme.info/uploads/1/3/0/5/130589401/130589401.html#third+angle+orthographic+projection+to+isometric
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013c3.bin
b6bea8abb7d08205a1207b692f1073c9323f7e1f9705e35d0c9fa6a2da85944a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C3 9144 bytes
font_01_sfnt_off00006b6f.bin
4f3b3eb172f73b5d505919d509142edaa26e01930fcc0f1dbaebe332ed5dc614		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6F 16152 bytes
font_02_sfnt_off00008036.bin
ca2e1d0c70b12ef6863074aff17026249c410dd7de6637a1a0cbceebb3a7874f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8036 3368 bytes
font_03_sfnt_off000120bc.bin
eaa4dde51fd04d4db8dc223d97e5e1aeb2070941b7c144db1acc557f645d9ab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120BC 4184 bytes

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