Malicious PDF — malware analysis report

Static analysis result for SHA-256 85c9d22e806f30c1…

MALICIOUS

PDF

39.2 KB Created: 2020-09-13 06:47:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab2bb5da878abe24a073e04e7a8de5d5 SHA-1: 324a443e6b8e3d093b931464dc6730ba6cc6c489 SHA-256: 85c9d22e806f30c1c4fbf2bed94e9161df98b4dc9f12a3c738f3719e514eb3f3
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to known malicious redirectors or link farms, indicating a phishing or malware distribution attempt. The document body text, though garbled, includes a URL that matches one of the identified malicious links, suggesting the document's content is designed to entice clicks. The ML classifier also strongly flagged this PDF as malicious.

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.link/wix?keyword=2008+tl+type+s+manual+for+sale
    • http://files.swfva.com/uploads/1/3/0/7/130740465/ecf1d68.pdf
    • http://sozuzez.fujimountainguides.com/uploads/1/3/2/3/132303245/xiketomero.pdf
    • http://mimotitek.simplyshoppingat808.com/uploads/1/3/0/7/130739777/e7de7e2e681226.pdf
    • http://tomilo.adanacfloor.com/uploads/1/3/1/4/131406063/vogiporudu-musipapu.pdf
    • http://fesivetij.homochittohollow.com/uploads/1/3/1/4/131453540/6eadcd49.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b4a829_9737c0f57526412bada9365240ad94b1.pdf
    • https://static.usrfiles.com/ugd/72b0e7_315239333fb64dc28afd2fbd778ebfbe.pdf
    • https://static.usrfiles.com/ugd/7603ae_ef6327a06c244fe383327751c304d613.pdf
    • https://static.usrfiles.com/ugd/529dbf_e5fd6a8dc4e9490ea70d8e24b11c6e18.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/73608093199.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://static.usrfiles.com/ugd/b7306e_8c86309ce786483d8dea2acb976bf789.pdf
    • https://static.usrfiles.com/ugd/e1c37d_b2155c79fd95414595302b6066b0635e.pdf
    • https://static.usrfiles.com/ugd/1813b3_f98e1a7bd66448aaa77bae0d502139eb.pdf
    • https://static.usrfiles.com/ugd/1be480_9ab79202657241fcb5732b48e1b8432d.pdf
    • https://static.usrfiles.com/ugd/078c79_ff1d90f92bdc4b56820e8089f864729c.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_off00005a14.bin
5b2762a75205e2b7fb9292896c7f14852936bc9de89691031396128dd2a64399		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A14 5524 bytes
font_01_sfnt_off00006cc5.bin
29a4bb09b7a143a1f15a02bda7782767b38e624f4d41a8c13706ac4be48d2389		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC5 10264 bytes

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