Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0d45665c3249fc8…

MALICIOUS

PDF

41.1 KB Created: 2020-08-19 12:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: beabb1ff4c82d43966b2d3b427010d69 SHA-1: 2386817668e4fd1e6a0052e6904cc6b3896ce5d1 SHA-256: d0d45665c3249fc842a7b80d19ba512b510e1933b19ebd11a6b8c50c4db60f32
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=formlabs+2+castable+resin'. The ML classifier also strongly indicated maliciousness. While the document body contains garbled text, the presence of a malicious redirector URL suggests the primary intent is to lure users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.ru/pify?keyword=formlabs+2+castable+resin
    • http://nazadefon.parlapianostudio.com/uploads/1/3/1/6/131606346/9738432.pdf
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/jewivofefagev.pdf
    • https://cdn.shopify.com/s/files/1/0429/0517/4179/files/2020_kpss_matematik_video_ders_notlar_benim_hocam_yaynlar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdf
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/hasfit_30_day_abs.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/50204649707.pdf
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/love_dont_change_lyrics_jeremih.pdf
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/jixevujoli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuvuwagel.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3408/files/assemblies_of_god_ghana_sunday_school_manual_2020.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006255.bin
c23e2e18ffacfbf0a70c7f828bbfa4497173447e453a1bee79ab98541fb8602c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6255 5172 bytes
font_01_sfnt_off000073d5.bin
3e3e59db22889d7e4e5300375f0d88aaf163a7cb2707b5ff9e55f4caaee52f0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73D5 10568 bytes

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