Malicious PDF — malware analysis report

Static analysis result for SHA-256 c415568ad1c6f990…

MALICIOUS

PDF

47.8 KB Created: 2020-08-08 11:32:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60dd0f05dd3165f6ebfed2250e0af9de SHA-1: 76b174d88b0312b3d045990a82b4ab4904c1349e SHA-256: c415568ad1c6f990e177b732560701d6504c95713a2666ee1a569b4346e07e60
128 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. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on cdn.shopify.com. The document body, though partially garbled, contains the URL that is also present in the malicious redirector. This suggests the document's primary purpose is to redirect users to malicious content via the ttraff.ru domain.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cuales+son+los+derechos+humanos+laborales+pdf
    • http://files.darkwarlosgames.com/uploads/1/3/1/3/131379789/3861830.pdf
    • http://files.riverwoodwinery.com/uploads/1/3/2/6/132695525/vadote-tiwibakoj-fusixowo-nofiwibevos.pdf
    • http://pogumevek.missionpilgrims.com/uploads/1/3/1/6/131637881/74f8f313585135.pdf
    • http://files.lizwalkerart.com/uploads/1/3/1/0/131071167/jopitarate.pdf
    • https://cdn.shopify.com/s/files/1/0433/6815/3253/files/80849609240.pdf
    • https://cdn.shopify.com/s/files/1/0433/9272/9246/files/xikuredizadafegazela.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/36780449428.pdf
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/21190256529.pdf
    • https://cdn.shopify.com/s/files/1/0434/6930/8061/files/34930604394.pdf
    • https://cdn.shopify.com/s/files/1/0428/6640/9638/files/78649311353.pdf
    • https://cdn.shopify.com/s/files/1/0455/3277/4565/files/karmasangsthan_bengali_news_paper_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0386/1416/files/77895242537.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/tuzabuwinufokisabiteza.pdf
    • https://cdn.shopify.com/s/files/1/0431/5679/9648/files/didixepogu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9213/2508/files/jisuxak.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_off00007b30.bin
7014b49f7b7195a840abbabc5220745f4c739a0ef41e4f0792811a890a5d57cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B30 5440 bytes
font_01_sfnt_off00008d79.bin
27ff90053a987c89db56f664dc9e84802fec2eeb40207dd2d27bbfa16ba31bda
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D79 10756 bytes