Malicious PDF — malware analysis report

Static analysis result for SHA-256 efde3dadef7378c6…

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 06:17:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4211edaa4add11767349774b27e290b3 SHA-1: 1834a5c5a2bb5fabd68e0253c9bb81f3e539cda7 SHA-256: efde3dadef7378c6e8f9862ff7dd86d4216e1e8307588a5d81f91a8720843df4
120 Risk Score

Malware Insights

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

The PDF file contains a prominent link that redirects to a URL associated with malicious activity, specifically a lure for downloading software. The document body, though heavily obfuscated, contains the target URL and keywords suggesting a software download scam. The presence of a large number of embedded links, many pointing to Shopify domains, further supports the SEO-based lure tactic. No scripts were extracted, limiting the analysis of direct payload execution.

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=adobe+after+effects+cs6+free+downloa
    • https://cdn.shopify.com/s/files/1/0435/4179/0871/files/vikebasafedegavedopij.pdf
    • https://cdn.shopify.com/s/files/1/0429/9010/8833/files/reliable_change_index_calculator.pdf
    • https://cdn.shopify.com/s/files/1/0448/0257/2437/files/stewart_multivariable_calculus_8th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/3844/0598/files/duwawaxila.pdf
    • https://static.usrfiles.com/ugd/de02f3_2d933d0047614e78993ffd7b8d8b57e8.pdf
    • https://static.usrfiles.com/ugd/b8c837_04a9ea6336e54b33a7498d49155cc6e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f4278d71d22471597b283dbeea6eddd.pdf
    • https://static.usrfiles.com/ugd/b8c837_853327562298494eaa99db4a50b10a37.pdf
    • https://cdn.shopify.com/s/files/1/0432/8466/0380/files/vocabulaire_maritime_anglais_franais.pdf
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/actinomycosis_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0434/5239/9777/files/carol_of_the_bells_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/51190888834.pdf
    • https://static.usrfiles.com/ugd/58a813_07e443aec98040a0888b3adf2753e13c.pdf
    • https://static.usrfiles.com/ugd/11f207_e4f6d23ac0f14bfa96b92868bce3ed91.pdf
    • https://static.usrfiles.com/ugd/20d83a_6e7411e184094bd3837fab36796869b3.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_off00006a28.bin
118d1c72ca12276a811acc3f2802985ae795f10ea17c3475e22498a304a75437		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A28 5392 bytes
font_01_sfnt_off00007c9d.bin
5258be5de3f72f684f9c94e77e60a582fe3143eee1a0dc73fbb7a85aa798514f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9D 10764 bytes

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