Malicious PDF — malware analysis report

Static analysis result for SHA-256 98c95f1be6b7e66c…

MALICIOUS

PDF

41.8 KB Created: 2020-08-09 12:44:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88cb7185969dffbcbb5e94c0c10854a7 SHA-1: c51a053ed867841e275f25da224ca41c58e5fd65 SHA-256: 98c95f1be6b7e66cc9b779ed037b6a2fb08e3be304e89a053815cbc8149a9a55
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=les+thanatonautes+bd+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many of which host benign content on Shopify. The primary malicious URL is likely intended to lure the user into downloading further malware or phishing for credentials. 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=les+thanatonautes+bd+pdf
    • http://files.shannonqiriarte.com/uploads/1/3/1/4/131452883/wamakisawo.pdf
    • http://files.drnickhenry.com/uploads/1/3/1/3/131384663/rirezofepixewajedovo.pdf
    • http://files.barriobakeryvt.com/uploads/1/3/1/1/131163617/jomesivo-rujum-larowirovas-tusof.pdf
    • http://files.liberarte.org/uploads/1/3/2/6/132682848/jadigejufafatef_xevakukepivir_ropogipat.pdf
    • http://files.polarityannarbor.com/uploads/1/3/1/4/131437276/xixakegad_zubifabiwi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0480/3746/files/envision_math_grade_2_topic_1.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/34360198155.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/65549553558.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/dibedi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/67936398906.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/small_business_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sejil.pdf
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/sobodapumewelof.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/careless_whisper_sax_notes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/gunaxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6908/files/pimorutet.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/xezesiwateriforubupok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wajumibuxup.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_off0000618d.bin
9c008db671af8520615482305fce59efed7d3169533bdbc4768d5156267d31ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x618D 5080 bytes
font_01_sfnt_off000072d2.bin
54ebf17186a8302c67c8b32f5218e395fefb34269f44eb1437404108b37fecba
pdf-font-stream PDF embedded font (sfnt) at offset 0x72D2 12132 bytes