Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af419d8d8253ca9…

MALICIOUS

PDF

42.6 KB Created: 2020-08-30 05:52:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d3395792902a8f5c26f5838a3d459ee SHA-1: 79073f927ea5abacd71639e8b15bc7f700b4819f SHA-256: 0af419d8d8253ca93654116c3f0770feb4f9d7be64731e21db27ffdbc97ebc49
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one prominent URL pointing to 'ttraff.ru', identified as malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Tiffany & Co.' and includes the malicious URL. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=please+return+to+tiffany
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/xonojik.pdf
    • https://cdn.shopify.com/s/files/1/0438/3693/2253/files/14318599936.pdf
    • https://cdn.shopify.com/s/files/1/0432/1191/5432/files/dsc_alarm_power_832_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/how_to_move_discord_overlay.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ca6ecbbfc2341dfb0bd62308cb361a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a6e6c3af0e04fbc8a3a456fb6f199ea.pdf
    • https://static.usrfiles.com/ugd/affb4a_21e134e9ce474bea9ddb12f5f1c4cd54.pdf
    • https://static.usrfiles.com/ugd/4bdc6d_cdefc0955169477a8b438f7824fee293.pdf
    • https://static.usrfiles.com/ugd/b8c837_e152ae9b6e3b4857980a9bbd5936e161.pdf
    • https://static.usrfiles.com/ugd/36f25b_cb6f94f43db64f5fa0b6ea0caf67809d.pdf
    • https://static.usrfiles.com/ugd/b8c837_03e43f3c253b4dedb96b00dbd9981e3e.pdf
    • https://static.usrfiles.com/ugd/3f80ec_e3681392f9db4f19b9394c82221a1132.pdf
    • https://cdn.shopify.com/s/files/1/0449/9508/4456/files/rivensbane_seal_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/bakipotekamagoraveke.pdf
    • https://cdn.shopify.com/s/files/1/0428/6952/2599/files/alleluia_chords.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.pdf
    • https://cdn.shopify.com/s/files/1/0461/7981/1481/files/7263563472.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066b6.bin
834174a316d99860e48fd295ee144db1b2ebc96d85617b965312ddf738db0ba6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B6 4864 bytes
font_01_sfnt_off00007758.bin
1582d9e6669f3d6e3b41c973e1b13cdd3f03f5df7ed01dfaab8e9b0193320eb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7758 11240 bytes

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