Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3d68d00bc644ae0…

MALICIOUS

PDF

69.3 KB Created: 2020-08-21 20:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f99638574d1d207a611607e16a28cadb SHA-1: aa5078f4c2e2aee29ecc542f1dabc439db050cf5 SHA-256: b3d68d00bc644ae08b1312e295a689dd484a9b92b661c003804721d83a4197b6
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as an 'example and answer' for compound interest. This lure is further supported by the 'SE_INVOICE_LURE' heuristic, suggesting a deceptive intent. The PDF also hosts a large number of external links, many pointing to Shopify, likely as part of a link farm to improve SEO for malicious content. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=compound+interest+example+and+answer
    • http://maguw.mysticmancreations.com/uploads/1/3/2/6/132680981/pipupidinamolaw.pdf
    • http://files.harvestmoonsanctuary.net/uploads/1/3/1/4/131453574/bisikuputovonu.pdf
    • http://files.hardinsburgbc.org/uploads/1/3/0/7/130740212/jidanulipilazamemate.pdf
    • http://files.faithfilledmillennialmomma.com/uploads/1/3/0/7/130738568/9636523.pdf
    • https://cdn.shopify.com/s/files/1/0446/1517/2259/files/gta_vice_city_cheats_codes_file_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20597849085.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/mupileteputusowuti.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/wuboguwipujosimavekelakir.pdf
    • https://cdn.shopify.com/s/files/1/0437/1261/0457/files/academic_skills.pdf
    • https://cdn.shopify.com/s/files/1/0432/2636/6116/files/91614951250.pdf
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/jumuvanuta.pdf
    • https://cdn.shopify.com/s/files/1/0437/0667/9447/files/gazofoxokibevedevap.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3026/files/11636504238.pdf
    • https://cdn.shopify.com/s/files/1/0437/4868/8033/files/feladane.pdf
    • https://cdn.shopify.com/s/files/1/0436/0326/3650/files/sadorovipovaduxarafovenu.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_off0000c79e.bin
3b89a1333aa93e194de12c5c5da229a8f3a969ace6b07a90c5323b9ece6747ec
pdf-font-stream PDF embedded font (sfnt) at offset 0xC79E 2828 bytes
font_01_sfnt_off0000d199.bin
7f8e5f5980ec236dc17b1f93415bbd74147cf06d2221a3b77487b54fe50390b6
pdf-font-stream PDF embedded font (sfnt) at offset 0xD199 5172 bytes
font_02_sfnt_off0000e325.bin
d41b3dd5cb7e6872d49d0488a277479f2e1a7a221ec344ac87a137785c537712
pdf-font-stream PDF embedded font (sfnt) at offset 0xE325 10580 bytes