Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1ff8365ccd7f21…

MALICIOUS

PDF

51.9 KB Created: 2020-08-25 00:17:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d259ba78ea2e6c26730b7862979703c SHA-1: 34db35562133e035d757ae88103f13aa32cf0339 SHA-256: 3e1ff8365ccd7f214f7b1087a3f936a9040854366b7de24f070609790d47a1bd
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains multiple embedded links, including one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that clicking the link `https://ttraff.ru/pify?keyword=ncert+chemistry+amines+pdf` will lead to malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external links, suggesting a spam or phishing campaign. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure-based attack pattern.

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=ncert+chemistry+amines+pdf
    • http://files.mayramloeberstudio.com/uploads/1/3/1/1/131164156/raridina-reparivodaja.pdf
    • http://files.shophandmadefarmstead.com/uploads/1/3/1/6/131606343/kosaxadifedazirif.pdf
    • http://files.shirecollies.com/uploads/1/3/1/4/131437236/jurugufav_pusefamujeratet_sujubat.pdf
    • http://files.carriagehouseclothing.com/uploads/1/3/0/7/130738779/786b1.pdf
    • https://cdn.shopify.com/s/files/1/0432/4258/6269/files/s_letter_image_wallpaper.pdf
    • https://cdn.shopify.com/s/files/1/0435/2435/8298/files/barbara_marciniak_bringers_of_the_dawn.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/62210054832.pdf
    • https://cdn.shopify.com/s/files/1/0438/0668/7394/files/antigen_presentation_and_processing.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8541/files/classroom_management_strategies_middle_school.pdf
    • https://cdn.shopify.com/s/files/1/0448/0057/3601/files/nier_automata_official_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/6305/8325/files/geometric_progression_class_11.pdf
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/ethiopia_travel_guide_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/1044/9820/files/behaviourism_in_the_classroom.pdf
    • https://cdn.shopify.com/s/files/1/0438/5921/4496/files/boart_longyear_financial_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/6879/1713/files/garmin_nuvi_205.pdf
    • https://cdn.shopify.com/s/files/1/0439/5863/2606/files/443886848.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/wivenolonuranetuwunutijas.pdf
    • https://cdn.shopify.com/s/files/1/0432/9766/9278/files/cinema_hd_apk_2._1._1.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/1/0438/0668/7394/files/antigen_pre

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008d8a.bin
f23d03175f87915ac039cdc91041c9888aeda48743d308fd61f8ddb71aa58933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8A 5436 bytes
font_01_sfnt_off00009fe5.bin
47ad519d63704e31decbd64cce72861dadc42b543530cbb4505a35bf3d73b4f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE5 10112 bytes

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