Malicious PDF — malware analysis report

Static analysis result for SHA-256 123b0a46d88a9af6…

MALICIOUS

PDF

42.0 KB Created: 2020-08-29 09:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 802bf45e55e2709616810fb1706269b1 SHA-1: 810a98b96c85014f5b5a855bbe7f9f9ea6e1509a SHA-256: 123b0a46d88a9af676b90a311deee5ed35d6e48882928ae9646877079b5c04e2
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.ru/wix?keyword=panasonic+tv+tc-l32c3+manual, is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a Panasonic TV manual, suggesting a lure to trick users into clicking the malicious link. The presence of numerous other links to PDF files indicates a link farm SEO tactic, likely to improve the ranking of the malicious redirector.

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=panasonic+tv+tc-l32c3+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_765b813be39641e098dfb3974e2d5643.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c24e92dc18548b990a0ad47d855dc6d.pdf
    • https://static.usrfiles.com/ugd/b8c837_3bc711463b5543f9bfda39dff8fea57d.pdf
    • https://static.usrfiles.com/ugd/b8c837_c44407b9b901460694c3080e5b5616a2.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/danuporutewagalufujijulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2879/0946/files/approach_song_by_amit.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/adobe_converter_apk.pdf
    • https://cdn.shopify.com/s/files/1/0428/6860/5095/files/55100452685.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5f0528152ec48529546888611bbc9ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_bd27f96660aa42948bf6d071bee223fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_c99193cc0183462995fb5114baa79c59.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc88f8d536d54c9793ab3acb6a5863a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_da30d6ebb71e486ba35eac40279845ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_35abd24c862d4319b7e29aed266c0f7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_ba607913a8904a358d37d38dc01a3227.pdf
    • https://static.usrfiles.com/ugd/b8c837_508962a504cd41a2b5b4c026f384cb87.pdf
    • https://static.usrfiles.com/ugd/b8c837_4fb2f9cbee6942548e2d36f1f208073c.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_off000065c2.bin
d57a44d73498c9658f51d7d45d474e3e9a6800fc318f2c06bec4c238bf3e6758		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65C2 5236 bytes
font_01_sfnt_off00007787.bin
9ea7a4bcdd887388bac5e3930d419018be7bdf5b05a14d76f9f91161f8349236		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7787 10404 bytes

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