Malicious PDF — malware analysis report

Static analysis result for SHA-256 56a95fd5776bec8f…

MALICIOUS

PDF

42.5 KB Created: 2020-08-17 14:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe0a4a358b3270b91f04bafa20fbe053 SHA-1: 94621221588d025eea2f50146d4bf14d7af99939 SHA-256: 56a95fd5776bec8fc74370b5ed20c75bb3396c7ea33ad89302f26d3417b3ff3c
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to a 'mosfet irfz44n datasheet'. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious content. No scripts were extracted from this sample.

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.ru/pify?keyword=mosfet+irfz44n+datasheet
    • http://files.integrativefitnessnursing.com/uploads/1/3/1/4/131482976/cdd82.pdf
    • http://files.projectxlacrosse.com/uploads/1/3/1/3/131380342/wiwukikazevip_malova_jejomubola.pdf
    • http://juwip.poppyplume.com/uploads/1/3/2/6/132695569/cb7dbcd7ab05.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/sozurejewajolobelikojovi.pdf
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/adjointe_administrative_formation_samuel_de_champlain.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/cessna_182rg_poh.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/37849635048.pdf
    • https://cdn.shopify.com/s/files/1/0438/9876/5480/files/talipotokirabikagofosavip.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6269/files/gokugumav.pdf
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/moose_jaw_fall_recreation_guide_2018.pdf
    • https://cdn.shopify.com/s/files/1/0437/2011/4344/files/theory_of_c_language.pdf
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/22543793397.pdf
    • https://cdn.shopify.com/s/files/1/0434/4227/4454/files/miriwumenoxomukon.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_off0000597c.bin
ab5d2b0ac95afb8de40ca37e5dca82c7f9cd57b59034f6135f605362e64be99d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x597C 4896 bytes
font_01_sfnt_off00006a25.bin
8581b84fe535bda940cc9c28d4dbf9d72bfbe5595487cd4704532cf5b235508f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A25 10968 bytes
font_02_sfnt_off00008f6b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6B 4324 bytes

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