Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f5755c73387ab7…

MALICIOUS

PDF

50.7 KB Created: 2020-08-11 03:01:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83872b4c7811ac359fecfd3a0f26819d SHA-1: 37bdbad99d9dcce90f359ac8cea46e3c64b0e4cb SHA-256: d2f5755c73387ab7e29b7dd3d06174412a30c89913887731ce804f481015908d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. The primary malicious URL, 'https://ttraff.cc/pify?keyword=bangla+onubad+boi+free+pdf', is identified as a malicious redirector. This suggests the document's purpose is to trick users into clicking the link, leading them to malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector and link farm strongly indicates a phishing or redirection attack.

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/pify?keyword=bangla+onubad+boi+free+pdf
    • http://files.iuppuci.com/uploads/1/3/1/4/131406300/680bb90523.pdf
    • http://files.conquest-fitness.com/uploads/1/3/1/0/131070895/fodog-bowox.pdf
    • http://gepor.mountaineerbassethounds.com/uploads/1/3/1/1/131164110/b98bf9.pdf
    • http://pafeku.madellaorganics.com/uploads/1/3/1/0/131070450/8224798.pdf
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/voltaire_candide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3815/files/80090466640.pdf
    • https://cdn.shopify.com/s/files/1/0433/4528/1183/files/dujazoxepinumuvulidolibe.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/mamubusizirigexo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/john_deere_d130_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2366/2236/files/gurugusabakosazumesobake.pdf
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/causes_of_crime_in_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9957/files/kapotebaginiwotugigor.pdf
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/47636792562.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/nekudevajojusakixib.pdf
    • https://cdn.shopify.com/s/files/1/0435/9222/0829/files/zukimedakexuzokope.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/wow_strange_dust.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/58335085815.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_off0000642a.bin
a5cf37fc62c9c7212bb6268413ff930e42823bba23226240bd23687a7046ce6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x642A 5220 bytes
font_01_sfnt_off000075ee.bin
18b8d064b911d248a63aceefc839de56774d7eb3d670501c78095171faa96012
pdf-font-stream PDF embedded font (sfnt) at offset 0x75EE 11768 bytes
font_02_sfnt_off00009a8a.bin
c41d1d400b33e888e65b2799f9b83f4e5144d6639e9399a9ee81f8a044ca0610
pdf-font-stream PDF embedded font (sfnt) at offset 0x9A8A 10204 bytes