Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f9e7ec116555dbb…

MALICIOUS

PDF

48.1 KB Created: 2020-08-18 19:28:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0dab8a61f956bd6c5304c40b757c15d SHA-1: c5dcc5525712f2c00f58d8c57713d16026b2388f SHA-256: 8f9e7ec116555dbb1b5a0b7d7d4470ae47c6206eb4556be36ff9ba43f2751ce4
150 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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same lure text as the malicious URL, suggesting a social engineering attempt. The primary intent appears to be directing the user to the malicious 'ttraff.com' URL, which likely serves as a gateway for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=the+biggest+loser+diet+plan+pdf
    • http://files.bfdsandiego.com/uploads/1/3/2/7/132712093/015af4e1bc5b6b.pdf
    • http://files.dbassettroofing.com/uploads/1/3/2/6/132682990/seloful-jujevimovukivig-biwokosunar-litujevudogubo.pdf
    • http://muzaxena.lisasprettypups.com/uploads/1/3/1/0/131070674/3d2f427f.pdf
    • http://files.capecodmedium.com/uploads/1/3/1/4/131453917/kiwazulepug.pdf
    • http://files.modelrailways.tv/uploads/1/3/2/6/132681949/ebc8f6c483a0b7.pdf
    • https://cdn.shopify.com/s/files/1/0436/3347/5737/files/1632903174.pdf
    • https://cdn.shopify.com/s/files/1/0430/9562/1796/files/48213604340.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/mitenofawopekoxuvalewar.pdf
    • https://cdn.shopify.com/s/files/1/0440/3822/6085/files/usps_state_abreviations.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/949986333.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/borutazaweluv.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/fukobitur.pdf
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/96083941987.pdf
    • https://cdn.shopify.com/s/files/1/0434/4250/3832/files/lunowo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1048/8477/files/zuxipeterupamopek.pdf
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/current_approaches_and_teaching_methods.pdf
    • https://cdn.shopify.com/s/files/1/0452/2138/0247/files/free_apron_sewing_pattern.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/livro_boca_do_inferno_download.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_off00007040.bin
3d7221afe275dd76c78c1ee1ef258ec3f968a6b59ccb77a2f1a88a51487dab01
pdf-font-stream PDF embedded font (sfnt) at offset 0x7040 5180 bytes
font_01_sfnt_off000081c7.bin
008e04b877c5d0595feadc343da0a38b226636fef7cafbfc80131a48bb3b8f55
pdf-font-stream PDF embedded font (sfnt) at offset 0x81C7 10240 bytes
font_02_sfnt_off0000a4eb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4EB 4324 bytes