Malicious PDF — malware analysis report

Static analysis result for SHA-256 09fb7a06a72ace7a…

MALICIOUS

PDF

43.8 KB Created: 2020-08-19 19:13:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1079c7e9f18d0de0b6aeda5c25973a66 SHA-1: a6d3c601033481860b04560cd33cc50a56d2461d SHA-256: 09fb7a06a72ace7a1272fca568a150bf38435979e932cec4898d33593ffa5e06
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link, pointing to `ttraff.com`. It also exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many of which are hosted on Shopify. The primary malicious URL is `https://ttraff.com/pify?keyword=new+english+action+movies+2017+free`, which likely serves as a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=new+english+action+movies+2017+free
    • http://files.northeastgafoodallergy.org/uploads/1/3/2/6/132682022/kegizadukimij.pdf
    • http://vuvekovu.fishtaleslurecompany.com/uploads/1/3/2/7/132712354/rajara.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/rewisujubuxuluxewu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3622/1341/files/devakizuz.pdf
    • https://cdn.shopify.com/s/files/1/0449/7919/1966/files/beetroot_poriyal_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/womimitomukivosorur.pdf
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/xizavebi.pdf
    • https://cdn.shopify.com/s/files/1/0449/3164/5608/files/dieta_keto_menu_semanal.pdf
    • https://cdn.shopify.com/s/files/1/0433/3908/8022/files/966_country_code.pdf
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/makiron.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/64864893636.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9952/files/61211343013.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060ca.bin
286cdd0945cfc1416aa68b5f0bf83a13cd5308f926b797ef834586217a13774e
pdf-font-stream PDF embedded font (sfnt) at offset 0x60CA 5820 bytes
font_01_sfnt_off000074a3.bin
157fd72a25bef2fd7773fd1d23a4ca565c4590619a7dd7d9563bfc42809c7357
pdf-font-stream PDF embedded font (sfnt) at offset 0x74A3 14560 bytes