Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c698381af3e82c9…

MALICIOUS

PDF

43.0 KB Created: 2020-08-29 19:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e41e5811b1388d225a25dd52c4ad7120 SHA-1: c82baeb41ad7b5bc97f52e695d2fd55d1420a51e SHA-256: 5c698381af3e82c9c2c61dc738fef99626cd2ce36e692bd746c782bf30412400
154 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, suggesting an attempt to drive traffic to malicious content. The document body, though heavily garbled, contains text related to 'Wanted 2 Turkish dubbing watch' and the malicious URL, indicating a lure. The presence of embedded URLs and the malicious redirector link strongly suggest this PDF is used 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=wanted+2+t%25C3%25BCrk%25C3%25A7e+d%25C3%25BCblaj+izle
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6545/8336/files/architektura_baroku.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/99403274657.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/nonorexikim.pdf
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/a_v_g_full_form.pdf
    • https://cdn.shopify.com/s/files/1/0461/6991/5555/files/are_you_sleeping_rhymes.pdf
    • https://static.usrfiles.com/ugd/b65acf_7ba5cfb4a2754a0b9995ca957df7901f.pdf
    • https://static.usrfiles.com/ugd/b8c837_3279adcd308141108f647b98d0b30610.pdf
    • https://static.usrfiles.com/ugd/b8c837_d38ddbb468934632b2c0b4658c6776b2.pdf
    • https://static.usrfiles.com/ugd/b8c837_af2cee9a670f4813b69f73cfc40e8136.pdf
    • https://static.usrfiles.com/ugd/b8c837_d08a0134108a41e787762ba4e8b11739.pdf
    • https://static.usrfiles.com/ugd/b8c837_afe59185dfcb4e8d95f30066b694701f.pdf
    • https://static.usrfiles.com/ugd/ce14f3_46b29e6d31ef461baa064ccb2983c705.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_off00006661.bin
111a494ec03a7b95872f0b658fefb3d817b4dad565423bf92125a179ad15f23e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6661 5416 bytes
font_01_sfnt_off000078ba.bin
443a43789b77b2c11e34f4bca99fd2eea575f8645a0ceec4c7db227529b337be
pdf-font-stream PDF embedded font (sfnt) at offset 0x78BA 12076 bytes