Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1eb2bbed9483e2…

MALICIOUS

PDF

41.6 KB Created: 2020-08-31 18:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d940d6647b48c3672e4d54cabac5e34e SHA-1: d321a44d687a7d1bcb55bb5678a76dfdcf40a926 SHA-256: ba1eb2bbed9483e23d39b349d5172be5cd88b5b9f7d7f2b2fab333b7d3bb6d79
194 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 text suggesting a lure for 'ps2 emulator for pc windows 8. 1'. This indicates the document's primary purpose is to redirect users to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.ru/wix?keyword=ps2+emulator+for+pc+windows+8.+1 In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6793/0789/files/menu_cetogenica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0423/9770/files/carbohydrate_metabolism_in_liver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dipudakafadaned.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4605/0714/files/online_to_word_converter_ocr_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2444/1498/files/home_baking_nacion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3849/8198/files/87513850324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3668/7008/files/bioethics_journal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/dizajuriv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/2007_toyota_camry_manual.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_563bce6c44624919b8f09561690b991b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/87d215_8e8e6c1e7f9e4b6aada89f2e596667ed.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_bb29977c52a348d393c4cc9969d8b762.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b88e3d_04f597efec6842b19477a67ec275968a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/86319b_849df68369b5415ca960d41ec8be34fa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56F2 5804 bytes
SHA-256: 93f5d91d21992dd26f168099d5a0a5fbb234681570185f8f5d5d0073ab3c1e91
font_01_sfnt_off00006ab6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB6 2236 bytes
SHA-256: 6a77f955d39b9d81e75477a2b3a68a06f90d7b352a411c8fd057aba46c531b2e
font_02_sfnt_off000074cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74CD 11040 bytes
SHA-256: c5fb97b2b8fc5e5fb1eed74274a6d2d0d1d659155cd08b8f8f4d547002e31693

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