Malicious PDF — malware analysis report

Static analysis result for SHA-256 292b8d8edbe7c140…

MALICIOUS

PDF

37.5 KB Created: 2020-09-01 00:38:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fd2cf61d8df0e7d07344a6b7814b1ce SHA-1: 39f07714c38e4dcfff5940ef82e280f8bc29e9b3 SHA-256: 292b8d8edbe7c14013992987e903a881b97ccd9e0f45fd8c62b808110f43e60c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a malicious redirector link to 'https://ttraff.club/wix?keyword=wordscapes+answers+level+8550'. This suggests the document is designed to lure users to malicious infrastructure, likely for phishing or malware delivery, by masquerading as a helpful resource.

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.club/wix?keyword=wordscapes+answers+level+8550
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/ap_cabinet_ministers_2020_list_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4206/9918/files/kujupu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6902/files/nursing_care_plan_for_anorectal_malformation.pdf
    • https://cdn.shopify.com/s/files/1/0433/5838/8374/files/patuse.pdf
    • https://cdn.shopify.com/s/files/1/0437/0182/9797/files/negutexademulesalamak.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/kazobetoxovukivevujeji.pdf
    • https://cdn.shopify.com/s/files/1/0433/8139/1514/files/multiplication_of_integers_worksheets_for_grade_6.pdf
    • https://cdn.shopify.com/s/files/1/0433/3033/8966/files/25979710816.pdf
    • https://cdn.shopify.com/s/files/1/0438/2998/5430/files/75136754844.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9814/files/96499849526.pdf
    • https://cdn.shopify.com/s/files/1/0441/1850/7672/files/augustus_nicodemus_lopes_formao.pdf
    • https://static.usrfiles.com/ugd/9421c8_f6e0bafaa9df43bd9650540aee90874a.pdf
    • https://static.usrfiles.com/ugd/9b5f63_f1188ec4407b4e94bdc8da671078a112.pdf
    • https://static.usrfiles.com/ugd/a01749_a9ca012ad48e40a185355c24dc4efd89.pdf
    • https://static.usrfiles.com/ugd/0a052f_f2f7303418d5408a8ae7bd0a3d2bc428.pdf
    • https://static.usrfiles.com/ugd/b8c837_28ee1430f79b46dc984a160ba83336f8.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_off000052c6.bin
90112dbbe2eb444306b302fc8642c8ff354c67bfa34d933d9cd01e62ee345313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52C6 5692 bytes
font_01_sfnt_off00006658.bin
f45ee17ac0e8dce6e0e7f519cff6bc2ebeef4f012b3cc012664a0c6a8313b2a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6658 10388 bytes

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