Malicious PDF — malware analysis report

Static analysis result for SHA-256 4128a88a7c381381…

MALICIOUS

PDF

37.5 KB Created: 2020-08-07 04:41:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b1bfe8e75c806ce449efe86a091bd0f SHA-1: fe7a09a3052bd94c6fb08023e12416b1867a3c9a SHA-256: 4128a88a7c381381a8530168aa47baa2e510e9996567ddbd244909cfd3356a8d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to known malicious infrastructure at ttraff.ru. This suggests the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution. No scripts were extracted, limiting further analysis of the payload.

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=abc+tracing+worksheet+pdf
    • http://files.karolegotto.com/uploads/1/3/0/7/130774962/lapowibowitaze.pdf
    • http://riwurezi.annawieczerzak.com/uploads/1/3/1/3/131398140/37cfb84c7.pdf
    • http://files.ideamagnets.com/uploads/1/3/0/7/130739154/mesuxuzeromugib_zanakeb.pdf
    • http://vazex.lessonsworthlearning.org/uploads/1/3/0/8/130814229/tubalel.pdf
    • http://files.worcestershireciba.com/uploads/1/3/0/9/130969576/vosoxekigotep.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1695/files/doxewobotopu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8683/0998/files/50443410667.pdf
    • https://cdn.shopify.com/s/files/1/0440/3986/4485/files/7274881949.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/apostila_tecnologia_da_informao.pdf
    • https://cdn.shopify.com/s/files/1/0431/9553/1424/files/xajivifipiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/short_anime_girl.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/exemple_d_attestation_de_travail.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/43596722663.pdf
    • https://cdn.shopify.com/s/files/1/0430/8746/2551/files/2907617551.pdf
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/princeton_review_sat_subject_test_chemistry.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/68552086959.pdf
    • https://cdn.shopify.com/s/files/1/0428/4776/4636/files/3383612025.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_off000053b9.bin
77e3f4e785c7dacba1c0e258127b4d31d01fec5065d7a78d2af7ce1d700a8881		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B9 5672 bytes
font_01_sfnt_off0000670f.bin
2521f7750c2b047d0ce6a767e634afe880d9f8361dca4c7522cb239153bb11b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x670F 10280 bytes

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