Malicious PDF — malware analysis report

Static analysis result for SHA-256 23291301bd60c977…

MALICIOUS

PDF

44.9 KB Created: 2020-09-18 22:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3daa455124ce1693a2781c67b6482e45 SHA-1: 4191eb7e44c65d5518f441f9ab7ed1e1c0a082c1 SHA-256: 23291301bd60c9775a2f88b87e18e87be6e9abaf49008de80ac9d003f84ba088
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 a redirector service. The document body, though heavily obfuscated, contains text related to 'Larin hydraulic floor jack manual' and references to the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The primary malicious URL identified is ttraff.me, which is flagged as a 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.me/wix?keyword=larin+hydraulic+floor+jack+manual
    • http://tukuwi.andrewcdavis.com/uploads/1/3/0/8/130874233/af1b46.pdf
    • http://zisabuw.skyryderaussies.com/uploads/1/3/1/3/131380485/3ea8077baea5c.pdf
    • http://jitubu.tlcsupportservices.org/uploads/1/3/1/6/131606008/kojupufejuso_juripepine_witanokobamik_vedupazofuf.pdf
    • https://1afc1f91-c0ce-44aa-b4f8-1ba87c8fb801.filesusr.com/ugd/5a1791_c9fd70485c8c4d2e811dfa4695777ee8.pdf?index=true
    • https://513516e2-9a38-4e52-a515-1892be70dc6c.filesusr.com/ugd/d5415a_b2acdde5c0f341a7ae246fefc447028e.pdf?index=true
    • https://9f04abd0-5114-40da-af43-f609903f89ac.filesusr.com/ugd/0bfb20_bb3f6d9991324dcebe8c593fa53eb9a8.pdf?index=true
    • https://2709f359-46a8-4119-b5d7-c2fc425ec250.filesusr.com/ugd/48bf55_6f5405f4c81f45b0b8382a7425c1c6dc.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0437/6998/7221/files/fujedofemagelizuxanodebo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/xusevojidutukomu.pdf
    • https://cdn.shopify.com/s/files/1/0447/4798/0951/files/85633322377.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4307/files/beautiful_in_white_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0465/7981/0471/files/35170116062.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/7th_edition_dark_angels_codex.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/centrifugal_compressor_design.pdf
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/english_grammar_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/sbi_bank_pass_book.pdf
    • https://cdn.shopify.com/s/files/1/0484/3729/7302/files/study_guide_algebra_and_trigonometry_structure_and_method_book_2_worksheet_answers.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/
    • https://cdn.shopify.com/s/files/1/0484/3729/7302/files/study_guide_algebra_and

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007223.bin
b742c5bbccbfb9f9c5fd122eec325119abfddfe0321aa34c40775af98a2f0059
pdf-font-stream PDF embedded font (sfnt) at offset 0x7223 5264 bytes
font_01_sfnt_off000083fa.bin
3f78b618e8a01b86928b64762297839e0a1acab8442b779ad2848d0774aae91b
pdf-font-stream PDF embedded font (sfnt) at offset 0x83FA 9948 bytes