Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f70361027869bf…

MALICIOUS

PDF

50.4 KB Created: 2020-08-13 22:03:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 207fe45a1f4cca370309e182f7174a44 SHA-1: 1fd303d8dd415e78d8eae663d8fbad56d04a5ed3 SHA-256: 93f70361027869bf31d5e752ae73829865c43e60f68ce9e06e3213976e49eea4
162 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, and 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms a link to malicious infrastructure. The presence of 'SE_PASSWORD_ARCHIVE_LURE' suggests this PDF is part of a multi-stage attack, likely intended to trick the user into downloading a password-protected archive, which is then used to bypass gateway security.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=anubhavinchu+raja+audio+song
    • http://xewit.lavinawagnerphotography.com/uploads/1/3/1/4/131409090/sanik_kolotugulorusap_roxiz.pdf
    • http://files.kaitlinkaufman.com/uploads/1/3/1/8/131871466/05995b2f.pdf
    • http://malot.woodenpensdownunder.com/uploads/1/3/0/7/130775971/2573186.pdf
    • http://xuwulegal.vegasvowsforfree.com/uploads/1/3/0/8/130813458/xepemitabudutapaxevi.pdf
    • http://masisoter.myserenitybodylotion.com/uploads/1/3/0/7/130775722/gajupeberofu-govudiwulujosem.pdf
    • https://cdn.shopif
    • https://cdn.shopify.com/s/files/1/0431/6135/4389/files/arboles_de_decision_finanzas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sotuxinonuwirumedubisaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/bengali_calendar_1423_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/lusakopejaxenarikoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0130/6526/files/character_reference_letter_for_child_custody.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/6981/files/jakoxujokupa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/letusovujevuge.pdf
    • https://cdn.shopify.com/s/files/1/0431/4316/8156/files/old_man_and_the_sea_sparknotes.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/95175891802.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/47585992817.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ridikesomuzumiburowafex.pdf
    • https://cdn.shopify.com/s/files/1/0430/2218/8701/files/kowekejobadezotugib.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_off00007982.bin
b4d297f3cf5a71cf59feff9973ea365500cdec04fb0e79dfe2480e07f1121556		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7982 5116 bytes
font_01_sfnt_off00008ac7.bin
953419d39c9902753acc85c0b85c4fd62e06b410f357443f953b2f5b067108a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC7 10840 bytes
font_02_sfnt_off0000afba.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFBA 4324 bytes

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