Malicious PDF — malware analysis report

Static analysis result for SHA-256 8095807634a40c07…

MALICIOUS

PDF

42.7 KB Created: 2020-08-31 09:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fc99f281d145182ac15fa86f38626d7 SHA-1: 5caba8e3d47c21055374b03a1c429382102d4c03 SHA-256: 8095807634a40c07887b0da30d423b791a0436014e49e3786107129613b9709d
154 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with a critical heuristic identifying it as a malicious redirector. The primary malicious URL, 'https://ttraff.cc/wix?keyword=dark+nights+of+the+soul+thomas+moore', is directly linked to malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site. The presence of many external PDF links further supports the classification as a link farm, likely intended to distribute malware or phishing content.

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.cc/wix?keyword=dark+nights+of+the+soul+thomas+moore
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_5534b1fd798b4bd2ab91d8ec39330eb0.pdf
    • https://static.usrfiles.com/ugd/c8d394_f1e0ca5b0aef46abb32e65b140b7bec3.pdf
    • https://static.usrfiles.com/ugd/b8c837_3675fb5c98b3446fbc976eeab6f6743e.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f7024103cfd40ba9e5ba3da68f509f0.pdf
    • https://cdn.shopify.com/s/files/1/0462/6520/4893/files/reseli.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/27017205136.pdf
    • https://cdn.shopify.com/s/files/1/0438/3621/1362/files/dd_form_2875.pdf
    • https://cdn.shopify.com/s/files/1/0440/1584/5541/files/mod_my_classic.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/present_and_past_tenses_elementary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0438/4204/4066/files/amf_82_70_troubleshooting.pdf
    • https://cdn.shopify.com/s/files/1/0431/5355/5610/files/fepoxegodetu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9600/7065/files/libro_agenda_pequeo_cerdo_capitalista_2020_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0433/9410/5509/files/nuvokideva.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5400/files/luxikemajibabopiliwemi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4325/8522/files/koxolejivafafuzixibakeda.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_off00006a5a.bin
67566da89f63413a94a0fe9754c4f0011bb8a2185bd734bed0021d18cfc91166		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5A 5244 bytes
font_01_sfnt_off00007c0a.bin
51b4dec7ef7b785bfb1849070ada41662ba25ba370a47caaae3c692b3ebd7da7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0A 9792 bytes

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