Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4b56eb1adc273c8…

MALICIOUS

PDF

43.4 KB Created: 2020-08-22 21:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a0ecc53de586925230784137b706edb SHA-1: 29de169286d856b0d344dfca0a878abbc6aaa180 SHA-256: d4b56eb1adc273c8ce62ee13b1230a510f119540dd6ba040f2688eac4082bd75
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised with a plausible lure related to 'workforce solutions ccs income guidelines'. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to shopify.com domains, likely for SEO manipulation to increase visibility. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent appears to be directing users to the malicious redirector.

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=workforce+solutions+ccs+income+guidelines
    • http://solevi.magiczwork.com/uploads/1/3/0/8/130814328/2628935.pdf
    • http://files.grouchosonthesquare.com/uploads/1/3/1/4/131410479/botak.pdf
    • http://xafajol.isabelsherk.com/uploads/1/3/1/3/131379730/7126304.pdf
    • http://tekuvuxok.norwichpoetry.org/uploads/1/3/0/9/130969242/4128990.pdf
    • https://cdn.shopify.com/s/files/1/0440/6060/6616/files/unamused_face_text.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/48057530403.pdf
    • https://cdn.shopify.com/s/files/1/0427/9900/5863/files/rapevutaniwok.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/lodedivozajefigu.pdf
    • https://cdn.shopify.com/s/files/1/0448/0968/3106/files/oz_yilmaz_seismic_data_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0437/1516/6357/files/jixamamipesi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9005/1221/files/takizoxakuribadijiz.pdf
    • https://cdn.shopify.com/s/files/1/0438/6557/1493/files/ribamixegu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/36741646331.pdf
    • https://cdn.shopify.com/s/files/1/0433/0310/8768/files/adhyatma_ramayanam_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5512/files/74642346807.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f56.bin
24ca27bcca88949f6c4599f66b4f2eaf808de6b95ffceb97b6c069387aa88334
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F56 5092 bytes
font_01_sfnt_off00007098.bin
5cb981888f7f4c9ddeec4d011fcbf887673a47d8f5937cf29213f9705f0d620e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7098 9980 bytes
font_02_sfnt_off000092b4.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x92B4 4324 bytes