Malicious PDF — malware analysis report

Static analysis result for SHA-256 e49ce1319395eb19…

MALICIOUS

PDF

46.3 KB Created: 2020-08-29 18:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0856f69b524acea54e07615c4bc5fd3a SHA-1: 33cb0ffc4cc0885e9c5da66917d70a8bf7142e0d SHA-256: e49ce1319395eb191c5eb1bd037943f82a4d0ca98857f522f5bd9e3fa091733c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs pointing to external resources. The primary malicious URL identified is https://ttraff.ru/wix?keyword=michael+pollan+escape+from+the+western+diet, which is likely used to funnel victims to further malicious 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.ru/wix?keyword=michael+pollan+escape+from+the+western+diet
    • https://static.usrfiles.com/ugd/b8c837_758a16ec0518498996994908b41602d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_93fe84e100b6477d969d195a3613f412.pdf
    • https://static.usrfiles.com/ugd/b8c837_c046e6c9db3f4ae79f7e44e1e978235e.pdf
    • https://static.usrfiles.com/ugd/b8c837_96d0b59aaa3745c1bd1cb70303ce10f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_eafe849da0914da69c03effc17f8b20e.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/bevenekoxedaluxozizup.pdf
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/tobori.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/xujavez.pdf
    • https://static.usrfiles.com/ugd/0e2875_dfd65f97bc4d466bbd603d7ab992d305.pdf
    • https://static.usrfiles.com/ugd/b8c837_68914df9eb4a44ecb18c928ff4647439.pdf
    • https://static.usrfiles.com/ugd/b8c837_41934b2beee5442ca25610b90fd6c930.pdf
    • https://static.usrfiles.com/ugd/b8c837_b524e3e52823497fb1243a0ed86b36d1.pdf
    • https://static.usrfiles.com/ugd/b8c837_3632ca7fdb0a49d7815eace3d6f9d49d.pdf
    • https://static.usrfiles.com/ugd/b8c837_a35b832cc50148b8aeebe5931d5bafee.pdf
    • https://static.usrfiles.com/ugd/8de238_59b1e81b41114a1fbbbe99d68496cc96.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000766c.bin
b717a6cf60009b2d5601b158fc6468356c36b6424aec912e2004276530986574
pdf-font-stream PDF embedded font (sfnt) at offset 0x766C 5492 bytes
font_01_sfnt_off000088f5.bin
40ff309ea3a573fc9008b0d0335aaa895adecd1aca246d0dff7f363a27ffd2ac
pdf-font-stream PDF embedded font (sfnt) at offset 0x88F5 10272 bytes