Malicious PDF — malware analysis report

Static analysis result for SHA-256 89fa52d8c6e03264…

MALICIOUS

PDF

47.6 KB Created: 2020-08-31 02:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fcbfeaa5b06e7bc113003ef63e8ebeb SHA-1: 4c180a363db145bc6071ec273996ad769db748e5 SHA-256: 89fa52d8c6e03264db8f6a944d26607a5af3260d4ee047ccb6705bc722948cfc
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 external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent. The presence of a link farm suggests an attempt to obscure the final malicious destination.

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.cc/wix?keyword=ohm+shanthi+oshaana+mp3
    • https://static.usrfiles.com/ugd/10b11f_76293b7753f44bfbaf6a0d554f4c9b88.pdf
    • https://static.usrfiles.com/ugd/b8c837_d16976069f194bbc8d388cb05b025464.pdf
    • https://static.usrfiles.com/ugd/b8c837_905a349e35e3427d888c29e42dddf4a6.pdf
    • https://static.usrfiles.com/ugd/0789d5_05959485e67c428e868ddf2fccfca180.pdf
    • https://static.usrfiles.com/ugd/f09a9d_ccff7566be114cbfa60ea1a2e4c2b2fc.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_6b8ade08ee9e4216a3140c5127182bbf.pdf
    • https://static.usrfiles.com/ugd/d2751c_6dcd23cce6ab468e8b4b11bd7f379813.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b2b338978544c079b0d69c166f3ebbb.pdf
    • https://static.usrfiles.com/ugd/30e015_b928c410bd924623bd832669594cbd95.pdf
    • https://static.usrfiles.com/ugd/b8c837_c6d535e08de14c388e95b2ff94021b16.pdf
    • https://cdn.shopify.com/s/files/1/0448/9661/6615/files/lightning_thief_graphic_novel.pdf
    • https://cdn.shopify.com/s/files/1/0432/1322/6139/files/turkle_evocative_objects.pdf
    • https://cdn.shopify.com/s/files/1/0436/4409/2566/files/bizixelupajenojafixupetaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/31880266538.pdf
    • https://cdn.shopify.com/s/files/1/0438/8136/5659/files/zixalake.pdf
    • https://static.usrfiles.com/ugd/b8c837_2bf95712b18f42708f6b0e0c05816a00.pdf
    • https://static.usrfiles.com/ugd/b8c837_99fad0fd65e749edbd69c1ff0b3a1c86.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_off00007911.bin
7882a8a1560fd4b84732ab4188795371c0d078be19428aa6df8ba8a8717ea3e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7911 5124 bytes
font_01_sfnt_off00008a57.bin
8cff0141c34ac870224e9df3dd54f1801463106ad5980f74853705cc90ca0750		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A57 12544 bytes

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