Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d8942021f47781e…

MALICIOUS

PDF

51.5 KB Created: 2020-08-09 19:55:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1e93807d2a4e5751e5361f3be800929 SHA-1: 88d4613142a698f9ee7a760314d268dab87a2646 SHA-256: 2d8942021f47781e570bb8836e36c910597c4ea1970b761fe9c4b8d84c9e6988
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting it is a lure for 'Reasoning ability questions and answers for bank exams pdf'. The presence of many links to external PDFs, including benign ones on Shopify, suggests a link farm or SEO manipulation tactic to drive traffic to the malicious redirector. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=reasoning+ability+questions+and+answers+for+bank+exams+pdf In PDF document text
    • http://files.noelcustoms.shop/uploads/1/3/2/6/132683063/tudegave.pdfIn PDF document text
    • http://files.lakepointetower.com/uploads/1/3/0/8/130874647/togefi-tawisidobe-wifijipiduz-pedaburuluzad.pdfIn PDF document text
    • http://files.swesdsu.org/uploads/1/3/0/7/130775825/5315908.pdfIn PDF document text
    • http://files.gracechurchyantic.org/uploads/1/3/1/0/131070518/fopoguvugewube.pdfIn 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/1/0432/0457/5387/files/vujetolujup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/88605566899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8165/4679/files/fazoxaradakamugejete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1620/9059/files/dapipufonevemuweva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9373/8143/files/atmega328_programming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/daxusobafibinowuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7777/1162/files/34746290751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/fabidasosofajilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0391/7974/files/crack_ielts_in_a_flash_letter_writing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0958/6846/files/takunij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9795/6256/files/binozexibowafalutog.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 5

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000087bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87BF 5960 bytes
SHA-256: 620fa412b84de997cef20fdca4d13c2eccbc30a7d722c87cee600ea28158d883
font_01_sfnt_off00009c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C09 10724 bytes
SHA-256: 35d71a8407f262ff60bfcc3311fda95e3bb0a13fd94fd383d8474071fd936c10

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