Malicious PDF — malware analysis report

Static analysis result for SHA-256 40fd0423ce50e0af…

MALICIOUS

PDF

46.7 KB Created: 2020-08-15 04:05:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45bcc406f1e12e8ff3c835d634c70b87 SHA-1: eab39bf735a422ea3fab67a3f82600354c414a15 SHA-256: 40fd0423ce50e0aff4a06410cd2ddf1925e1c845c6b757911fcdee16bde18bd4
120 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as content, directing users to a malicious redirector at ttraff.com. This URL is associated with the lure "thermodynamics gate questions with solutions pdf". The PDF also functions as a link farm, embedding numerous external links, many of which point to Shopify domains, likely for SEO manipulation to increase visibility. 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.com/wb?keyword=thermodynamics%20gate%20questions%20with%20solutions%20pdf
    • http://muzuz.lodestonecreative.org/uploads/1/3/0/7/130739678/2586383.pdf
    • http://files.sunnydaysevents.com/uploads/1/3/1/4/131437978/4348315.pdf
    • http://files.gccdoc.org/uploads/1/3/0/9/130969897/ginodunagati.pdf
    • http://files.beautifulbling4five.com/uploads/1/3/2/6/132681670/1923425.pdf
    • http://moradi.maddiecookcommunications.com/uploads/1/3/1/3/131380263/dinowozax-luvateka-vululibaxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7650/files/91540944366.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2336/files/formulario_reembolso_bradesco_saude.pdf
    • https://cdn.shopify.com/s/files/1/0438/2267/8173/files/kewovibavod.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/19475772775.pdf
    • https://cdn.shopify.com/s/files/1/0433/8978/0124/files/workout_schedule_for_building_muscle.pdf
    • https://cdn.shopify.com/s/files/1/0431/3464/8482/files/89551065049.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/instantiation_definition_c_templates.pdf
    • https://cdn.shopify.com/s/files/1/0435/9222/0840/files/luwanuzenarupaxez.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/vonarasubodubod.pdf
    • https://cdn.shopify.com/s/files/1/0430/5167/9898/files/top_conan_exiles_servers.pdf
    • https://cdn.shopify.com/s/files/1/0434/6707/9830/files/42726019068.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e3c.bin
01f7f14464c4390b3221d68d1173ae60488c814f2ec7026bece2bf07250262f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3C 5840 bytes
font_01_sfnt_off00007203.bin
33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7203 2116 bytes
font_02_sfnt_off00007bcd.bin
4e7429485b9933729d9f5d67a57525da254cb648a05b7af7048c98aed55e591c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCD 15324 bytes