Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d1c8913f96376d…

MALICIOUS

PDF

51.4 KB Created: 2020-08-12 03:37:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c48d0826927a4df7c91e6ca475159fe SHA-1: 9837c4f5015f89fb7589044719c862a265f4083d SHA-256: 88d1c8913f96376d8028dc1e0e5bfa1c3063432f272eaa01f9b044f08be2e686
120 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, which is likely used to deliver a secondary payload. The document also contains a large number of embedded links to other PDFs, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=interlinear+bible+greek+hebrew+english+pdf
    • http://files.ladiesofhiphopfestival.com/uploads/1/3/0/9/130969489/7247828.pdf
    • http://files.frontporchmusic.org/uploads/1/3/1/4/131483371/bowom.pdf
    • http://pagud.brouhahagames.com/uploads/1/3/1/3/131379296/6855208.pdf
    • https://cdn.shopify.com/s/files/1/0437/2683/1784/files/catalogo_truper_2020_con_precios_publico.pdf
    • https://cdn.shopify.com/s/files/1/0428/2010/8455/files/tcs_aptitude_questions_and_answers_with_explanation_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/acutely_ill_patients_in_hospital.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/49716775116.pdf
    • https://cdn.shopify.com/s/files/1/0435/4854/1087/files/air_pollution_control_a_design_approach_4th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3287/1074/files/luguvawobaponexipikinupu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/zakowemimavasabejekama.pdf
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/73982374975.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/dire_maul_east_entrance.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5402/files/wogezifuwiwo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7206/1591/files/92660297216.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006054.bin
f1585241b59a1002e627af24859d8bddc2a41f5101ead6a7a290360bc82d6b36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6054 2912 bytes
font_01_sfnt_off00006ab9.bin
0a3efe6dc239ca4c10bf756aae2f2a108010f07733a2c610eca8c9c2a16b8f2c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB9 5536 bytes
font_02_sfnt_off00007d7f.bin
7c849c819def30a085bff786074276235b33ec1bacd319f6d7fef517f6acebbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7F 1796 bytes
font_03_sfnt_off00008671.bin
a30f7435e5ed7d4275ab1cae324cd0bf5c8bb0adfc106a82a9e14bb90ba44464		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8671 10560 bytes
font_04_sfnt_off0000aa16.bin
8495dff0895936632a550c385781be6cc7fcd2ad0fc4c9557ca640f60c0837b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA16 16196 bytes

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