Malicious PDF — malware analysis report

Static analysis result for SHA-256 43007c3c046791bb…

MALICIOUS

PDF

37.0 KB Created: 2020-08-17 01:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49817140f793ee01a52cc5f5fb715825 SHA-1: 68611369b3392916e172c4e6594490cc552e584f SHA-256: 43007c3c046791bb0142a14559abebf35698eb223c00c8faf93d5e4b0e1299d4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The embedded URL `https://ttraff.cc/pify?keyword=guide+for+primer+gunshot+residue+analysis` is flagged as malicious. The document body, though partially corrupted, contains this URL and other PDF links, suggesting a lure or redirection mechanism. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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/pify?keyword=guide+for+primer+gunshot+residue+analysis
    • http://lezezolow.pinerivernewfs.com/uploads/1/3/2/6/132681590/kiligi.pdf
    • http://mugelip.sunshinemanagementmoraira.com/uploads/1/3/1/3/131398140/xogizakigef.pdf
    • http://files.nsiclan.com/uploads/1/3/1/4/131438111/favodasosovakarate.pdf
    • http://files.brittneyowens.com/uploads/1/3/1/3/131378990/dewobadaditudi_sanazoz.pdf
    • http://files.oracleministries.org/uploads/1/3/2/8/132814791/f7a4f.pdf
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/lovufavuragi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/download_access_database_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/4764/1510/files/27519117654.pdf
    • https://cdn.shopify.com/s/files/1/0435/1374/1472/files/vafapizazawiripu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/437800162.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/melee_spell_attack_5e.pdf
    • https://cdn.shopify.com/s/files/1/0438/4840/1046/files/cambridge_igcse_computer_science_textbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/advanced_engineering_mathematics_by_rk_jain_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/number_theory.pdf
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/chart_5011_symbols_and_abbreviations_used_on_admiralty_charts.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/59891078575.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_off000051dd.bin
1cc244cecc676e7f9bde2882fc82ffe0ef654559326eb63ec1e5fedf889e7d39
pdf-font-stream PDF embedded font (sfnt) at offset 0x51DD 5588 bytes
font_01_sfnt_off000064bd.bin
73d4c20f6564a86aad933cc51516b11b656ed7b5a64451eef8809361bac2dd67
pdf-font-stream PDF embedded font (sfnt) at offset 0x64BD 10008 bytes