Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea513c511dc63cc3…

MALICIOUS

PDF

50.9 KB Created: 2020-08-29 18:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dab7d83ce2d02ab01ddea4ece5317f75 SHA-1: d78e37cb136f4d075889510a0c86848a34de6b4b SHA-256: ea513c511dc63cc35a32a71e9536373fa817203667e8b75c92a2144a30674005
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is disguised with SEO-optimized keywords related to 'fallout 4 armor mods'. The link directs to 'https://ttraff.cc/wix?keyword=best+fallout+4+armor+mods', which is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated but contains the malicious URL.

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=best+fallout+4+armor+mods
    • https://cdn.shopify.com/s/files/1/0431/1167/8114/files/criteria_of_research_report.pdf
    • https://cdn.shopify.com/s/files/1/0440/3298/3190/files/13444471599.pdf
    • https://cdn.shopify.com/s/files/1/0437/9249/8850/files/bi_triangle.pdf
    • https://cdn.shopify.com/s/files/1/0438/1189/7504/files/bitalobatajegapimopofulup.pdf
    • https://cdn.shopify.com/s/files/1/0430/8333/3799/files/virtual_dj_keygen.pdf
    • https://cdn.shopify.com/s/files/1/0430/2536/7194/files/zusedabovin.pdf
    • https://cdn.shopify.com/s/files/1/0433/6631/8230/files/wudogevusagarolodefiwiji.pdf
    • https://cdn.shopify.com/s/files/1/0428/3750/8252/files/wakonisisa.pdf
    • https://static.usrfiles.com/ugd/a18aa6_1c62a2cf16124149bab54ff231eec355.pdf
    • https://static.usrfiles.com/ugd/6908d7_75f584d894284319b9af980152f105ab.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e7c9c0c6b8a4e9dac1d6d36128f7545.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/
    • https://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000084dd.bin
7d7c328ba2a56e2e9c2eb6402fbfd3fe6905b3cf36087e1158b6f26b981a288d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84DD 5192 bytes
font_01_sfnt_off00009670.bin
eb282eda60990bf3a78aed18ac637c2cea6c06a2e8d404a43c8ae5473fe5aba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9670 12812 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.