Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f07eda01b44123e…

MALICIOUS

PDF

40.3 KB Created: 2020-08-29 10:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2808e300f5870c89e1f12e894779d07 SHA-1: 667881ee41d1ba8718d90d0dc54ed524280455d3 SHA-256: 6f07eda01b44123e7d0a7072ca66d4b69af28522633f0b96040a1af66f3f80b0
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, disguised with a keyword related to 'new kids on the block dolls'. This suggests a phishing or scam attempt to redirect the user to malicious content. The PDF also hosts a large number of external PDF links, potentially for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the presence of embedded URLs and the malicious redirector strongly indicate a malicious intent.

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=new+kids+on+the+block+dolls
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/4600/1045/files/52214483127.pdf
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/avengers_movie_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/20013485494.pdf
    • https://static.usrfiles.com/ugd/b8c837_76acf84a5f9644468da6a8075c05713f.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/rarirabosuwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0830/files/jijogusaxediwalojubeju.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23342697578.pdf
    • https://cdn.shopify.com/s/files/1/0438/4666/4349/files/definicion_de_almacenamiento_optico_en_informatica.pdf
    • https://cdn.shopify.com/s/files/1/0435/5650/3707/files/biochemistry_basics_pogil_extension_questions_answers.pdf
    • https://static.usrfiles.com/ugd/b8c837_e73519f9ed3340439bb3c4590368a882.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf155e1798dc4d58ad38a62e6c9f8df3.pdf
    • https://static.usrfiles.com/ugd/b8c837_155ba0f02f494e728781041923348362.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d327123c06f4372a8ca3f9de77fdffc.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_off00006039.bin
40cafa70bf7710660a2eac78f9aa91e03e98bc0ac7e4124851efc2bb0fdeb188
pdf-font-stream PDF embedded font (sfnt) at offset 0x6039 4988 bytes
font_01_sfnt_off00007146.bin
1f1f6f5492a2c96eebd53926fbfb80f0aef999d4404c9e460f5e0d8b95e2740a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7146 10412 bytes