Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c77b68f71f8cd5…

MALICIOUS

PDF

36.2 KB Created: 2020-08-29 21:52:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd6dd72338691c90e1004e5f779863ff SHA-1: e5c8c7503bdd8ec13fe378675665377bcca34dad SHA-256: 47c77b68f71f8cd56dcf1647174236f96c1c6d8d39e29fe41a54cf4c256c1c9a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are consistent with the heuristic findings. The primary attack pattern involves luring users to malicious sites via a link farm.

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=trooper+steven+jacobs
    • https://static.usrfiles.com/ugd/b8c837_528317447e284e2898b0305cc4846d9f.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b8b994bfbaf4669bd8201a54318016d.pdf
    • https://static.usrfiles.com/ugd/b7ed05_6dd6935bd6fc4ff6bd0b19cd177da84b.pdf
    • https://static.usrfiles.com/ugd/b8c837_3743659eb6c8433fa757ec478e5318f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_d698581ab6b34881bb95e69b237368cf.pdf
    • https://static.usrfiles.com/ugd/b8c837_42717236b40443d0974665c2105e88a0.pdf
    • https://static.usrfiles.com/ugd/c6ac46_8aec9cc738374baab4803c23d856b266.pdf
    • https://static.usrfiles.com/ugd/067ecb_7c3f83d1bdd64274b80dc7098a8fc0fa.pdf
    • https://static.usrfiles.com/ugd/b8c837_f369167a16424859b507f67f9304f693.pdf
    • https://cdn.shopify.com/s/files/1/0430/4066/9849/files/she_was_already_dead_meme_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/6619/5106/files/35956360573.pdf
    • https://cdn.shopify.com/s/files/1/0432/5123/7022/files/altova_mapforce_tutorial.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_off000050b4.bin
e4b810c615f1801ae5e7292973f81823984202d4e535db1bb6421554d919682f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50B4 5120 bytes
font_01_sfnt_off00006238.bin
4810eb9b85a7b8588e873c8c470ff72d70e2dd9d8d88a48ee85f2b71d396e675		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6238 10000 bytes

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