Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a654a23720e462…

MALICIOUS

PDF

48.1 KB Created: 2020-08-21 12:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfc3181809e86aed8af88de3d4ba3d9a SHA-1: 03759bdf7b208fd50399bb026d063f8b0cd5436f SHA-256: 06a654a23720e462a9997c6b016691390d5c6a73bf0045c588d58f16c111c821
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link to 'ttraff.ru', indicating a malicious redirector. The document body and heuristics strongly suggest an advance-fee scam, likely attempting to trick users into clicking the malicious link to claim a prize or parcel. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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/pify?keyword=castle+crashers++2018
    • http://texiduda.lizromanek.com/uploads/1/3/0/8/130813784/077b3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/46075185505.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/6631/7205/files/microsoft_certification_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/0321/3984/files/hilton_honors_credit_card_authorization_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/3714/5753/files/1006451871.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/25071383095.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tazoxusejeko.pdf
    • https://cdn.shopify.com/s/files/1/0435/4785/2959/files/ssc_result_2019_apps.pdf
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/merimegazanesadabor.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/natijo.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_off00007d54.bin
7512aa3e8e3d37205972bfd016744f3a609bc6b84ad69755e5a79908953de859
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D54 5312 bytes
font_01_sfnt_off00008f55.bin
478d876bfc85d7e1df900b0d6cecfae762fbc4ceab085f61f38bd753ab4ed6cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F55 10744 bytes