Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c22a6601837b2c…

MALICIOUS

PDF

42.0 KB Created: 2020-09-16 21:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2012da278024824613cae12b1545f77f SHA-1: 6ff501dc88d79d0bd029c7f154493f2cbe5a5a5a SHA-256: 70c22a6601837b2cc98e4eaacb3753e7b017708fefeb362c46c68d3a15aeddcd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically directing users to 'https://ttraff.club/wix?keyword=ben+10+protector+of+earth+wii'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The presence of numerous other PDF links, many pointing to benign content, indicates a potential link farm or SEO manipulation tactic to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=ben+10+protector+of+earth+wii
    • http://xuvad.msullivanart.com/uploads/1/3/1/3/131379255/92da4659ca6a79c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://667550cd-75a4-4a70-96cc-aaab6125a29c.filesusr.com/ugd/65e777_8c1d581bb4944230bad8056063503d22.pdf?index=true
    • https://dd0d3632-f4f5-46f8-a84f-e05c3d2affe0.filesusr.com/ugd/d1fcfc_a4dd0ab6e0cf4eb89fdc7d5f82306658.pdf?index=true
    • https://31b06fac-f81a-4637-96ba-5c7d4d5f5f69.filesusr.com/ugd/9edd50_0254e143993d480b97a4180892933e3c.pdf?index=true
    • https://9c778ef6-4308-455e-9d9b-5e0f6aa6ab6e.filesusr.com/ugd/0aab01_385de6026a61485fa901356b7d28bd78.pdf?index=true
    • https://1996ad11-9bbc-42c9-b3f1-e40e3c18fce4.filesusr.com/ugd/badafb_e7204584b68a4d619e4db5f09e826f34.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0452/3006/3773/files/possessive_pronouns_french.pdf
    • https://cdn.shopify.com/s/files/1/0437/7149/4554/files/gitulugarusonis.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/sufujuxegolosadifiraw.pdf
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/siralujovevidiselogobun.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9675/files/computational_fluid_dynamics_simulation_software.pdf
    • https://cdn.shopify.com/s/files/1/0431/1475/8293/files/15456814570.pdf
    • https://cdn.shopify.com/s/files/1/0428/8780/7129/files/wazodiva.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7250/files/algebra_textbook_of_10th_std_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/saxuvusetusexowumefavun.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006631.bin
486a0909527d0c23b8bce8e12c4d5575dc6fe361044319ef76ed8c545f33a1d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 5228 bytes
font_01_sfnt_off00007816.bin
02c2fd96e76e161a10434c10c7c2f11a1bc921a6628b0a5a8c11a9b5ce485225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7816 10148 bytes

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