Malicious PDF — malware analysis report

Static analysis result for SHA-256 821e7cf0e4541888…

MALICIOUS

PDF

46.6 KB Created: 2020-08-15 02:08:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d79f33a384128a2f836820b3f7505113 SHA-1: 8e380b08a6f256f47b880f25f5f6a5e81cdbdb02 SHA-256: 821e7cf0e4541888a508bfb0c5f826f37a09659c5d7e6c51fd5c9071937704ba
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wb?keyword=znkr%20iaido%20training%20handbook%20pdf'. Additionally, the 'SE_PAYMENT_REDIRECT_LURE' heuristic indicates the document's content is designed to trick users into changing payment instructions. The presence of numerous embedded URLs, many pointing to benign Shopify files but also several unknown domains, further supports a malicious intent to redirect users to potentially harmful sites.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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/wb?keyword=znkr%20iaido%20training%20handbook%20pdf
    • http://gafeguzu.odysseusorchestra.com/uploads/1/3/0/7/130739289/822a36b2aac2.pdf
    • http://kekan.cantoncommunityfund.org/uploads/1/3/0/8/130873951/4426dae97c396d.pdf
    • http://files.mcbsca.org/uploads/1/3/1/4/131437834/4eb5952.pdf
    • http://files.mrsnolanskindergarten.com/uploads/1/3/0/8/130874031/guwabatirabo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/9541/5189/files/online_classical_guitar_tab_archive.pdf
    • https://cdn.shopify.com/s/files/1/0432/9698/1147/files/alesis_dm6_electronic_drum_set_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/exadata_database_machine_administration_workshop_ed_3.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/32671686417.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/83664743916.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/zapederagakutisepazeki.pdf
    • https://cdn.shopify.com/s/files/1/0438/3119/7856/files/pezolazozudubuzivixomi.pdf
    • https://cdn.shopify.com/s/files/1/0441/3269/6216/files/54919074485.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bca.bin
fdfb9ca180d4eda29b43f587765d011d8d5bdd7d48142342e0a4f88205f44a9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCA 4924 bytes
font_01_sfnt_off00007c72.bin
123f4925e9a3c675f827c37fa0f468d148562b78068e044985fc93717524422e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C72 10272 bytes
font_02_sfnt_off00009f7d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F7D 4324 bytes

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