Malicious PDF — malware analysis report

Static analysis result for SHA-256 064b50781e43af25…

MALICIOUS

PDF

41.8 KB Created: 2020-08-29 04:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78788c926ff1f9cec42a9b2d84927ce7 SHA-1: cec8c338c1f87467a4d85b326f8a56eca08e8dd1 SHA-256: 064b50781e43af25704056278d7b308f06787489647de871a5e822676f66a90d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which, 'https://ttraff.ru/wix?keyword=marketing+management+14th+edition+pdf', is flagged as a malicious redirector. The document body and heuristics indicate a lure for an advance-fee scam, likely attempting to trick the user into visiting malicious sites or downloading further malware. The presence of numerous external PDF links also suggests a link farm, potentially for SEO manipulation or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=marketing+management+14th+edition+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_56832bff5e0b4c5982dfa82bff44cd28.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ad5dce24a5841b0bfda3ac696c1c899.pdf
    • https://static.usrfiles.com/ugd/b8c837_e035f19bee364caeadc848be57b77a97.pdf
    • https://static.usrfiles.com/ugd/b8c837_e21ac01d42b1456f88727182eb37006b.pdf
    • https://cdn.shopify.com/s/files/1/0429/8955/1770/files/brain_meme_template_5.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/lusurodokaxunegewizorewif.pdf
    • https://cdn.shopify.com/s/files/1/0428/7420/8419/files/19726090076.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/xojerivukajo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3454/0192/files/crib_sheet_meaning_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2095/files/zixebamezudipukazaweluwet.pdf
    • https://cdn.shopify.com/s/files/1/0430/5525/1605/files/burafexudubatakomev.pdf
    • https://static.usrfiles.com/ugd/b8c837_e97a4c2bb7ae48c3aba4fe4fdf46d109.pdf
    • https://static.usrfiles.com/ugd/b8c837_2762b56172ef4ef8bb40c865dfa9f22b.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_off000064ce.bin
b04f7d733354a85e4ce3d8fa61e83244a9a6210bb7e8960b3f6027b481297886		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CE 5452 bytes
font_01_sfnt_off00007740.bin
12d787532522377711a56146d688d951ad611c716c47c7bd978d883c9a6c3655		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7740 10160 bytes

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