Malicious PDF — malware analysis report

Static analysis result for SHA-256 80760404723041d3…

MALICIOUS

PDF

43.7 KB Created: 2020-08-30 09:06:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2ea8d8f47da73cb9a00e40b2f356b86 SHA-1: 40345c8780f0640fed4a0d703eb41a1cdddf01b6 SHA-256: 80760404723041d30a3c1ae2dee9ec574593bf3b779c8e26d061604812f19117
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, appears to be a lure related to a 'shopping list template'. The presence of a malicious redirector and a large number of external links suggests an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/wix?keyword=shopping+list+template+nz
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/vetirokimemerewu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6741/5457/files/pagodafikebadadumip.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/tiriwekagapuxavomolu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1516/6357/files/cartoon_animation_films_free.pdf
    • https://static.usrfiles.com/ugd/6240f8_42c4830ae6764723b4fbc784f630970e.pdf
    • https://static.usrfiles.com/ugd/26481d_fc403f2f6ba74bd1a254e7092e137a77.pdf
    • https://static.usrfiles.com/ugd/764aaa_09dfd48e48cb402fa04b7220731802bc.pdf
    • https://static.usrfiles.com/ugd/64d889_dc90f542778f44179f68b832352cc37f.pdf
    • https://static.usrfiles.com/ugd/b8c837_506f562396bf4f09bcbc7d1bd30129cd.pdf
    • https://cdn.shopify.com/s/files/1/0440/3855/3765/files/dukogesufopibi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9899/4856/files/74591313584.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7612/files/80858432243.pdf
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/14231901944.pdf
    • https://static.usrfiles.com/ugd/b8c837_6b3c28caa47b4b82a743482ddadeec86.pdf
    • https://static.usrfiles.com/ugd/a1fb72_79baf73b154446a5abb18faf8ba9acfd.pdf
    • https://static.usrfiles.com/ugd/b8c837_407c605c881c44f1a4d6a1741ebced12.pdf
    • https://static.usrfiles.com/ugd/8d57bd_713df2fb1a9a43b58abde97dbe6c0bc0.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_off00006b9f.bin
3ef43a459f961797095c86783bb5f6490c19b778c7c98cddbdee48e01d361f92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9F 5292 bytes
font_01_sfnt_off00007d7b.bin
ec9ea0f3e4cea68f4a9d66b004ffe4faca51994d013c7708d72d59701f5c3ffa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7B 10984 bytes

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