Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a00b3a4e8ca436…

MALICIOUS

PDF

50.6 KB Created: 2020-08-30 05:53:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b68acd855c9fc1242a6d115d00f5c79a SHA-1: a328f2f0b6106a7e5f0388316bc8deb1e0baf31e SHA-256: 69a00b3a4e8ca4367913d9cd715381d7f3375e9d19c1023dbcf96a7fbdf0be7b
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised with fitness-related keywords. This suggests an attempt to lure the user to a malicious site, likely for phishing or to download further malware. The PDF also contains a large number of links to external PDFs, many of which are hosted on Shopify, indicating a potential link farm or SEO manipulation tactic. No scripts were extracted from this sample.

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=vinsanity+shred+ripped+in+90+days+re
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/66767882362.pdf
    • https://cdn.shopify.com/s/files/1/0464/9261/4824/files/the_movie_arjun_the_warrior_prince.pdf
    • https://cdn.shopify.com/s/files/1/0432/7482/9987/files/the_astonishing_color_of_after_download_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/0391/2098/files/tewigiwewuwo.pdf
    • https://static.usrfiles.com/ugd/ab059d_644ccceea0a045e6989db0a13647001f.pdf
    • https://static.usrfiles.com/ugd/565485_9b46d18106f541ae98ac7e024c850f51.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd1ce91826c9476d95f0a45d7b407795.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc17681cc45544259d04b49a771b5b28.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd848ff76c9642cc826eb887dbff8f94.pdf
    • https://cdn.shopify.com/s/files/1/0434/7504/2457/files/dipegopulumonejuwof.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0678/files/bamapowofum.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_off000084fe.bin
60888b6dce8060dac7d836fc430df58594f05bcb749ec6b61f8664ccd7f58161
pdf-font-stream PDF embedded font (sfnt) at offset 0x84FE 5380 bytes
font_01_sfnt_off00009736.bin
d4646e0524d5e53ff82516d11922a583d1fd4c28b5df0d1a62bbe9fc0fa1c64b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9736 11244 bytes