Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e2435f3b854e91…

MALICIOUS

PDF

40.4 KB Created: 2020-08-12 07:14:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 71d245104986d10b487d617d5bf95dd1 SHA-1: 37c138b7488bbf5fef151e77eba87882d3534e4b SHA-256: e3e2435f3b854e914be43a096643c9dc092af6206d958f7302950ba9413d8f7c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, many of which are likely part of a link farm. The embedded URL in the document body, 'https://ttraff.ru/wb?keyword=philosophy%20of%20integrated%20science%20in%20nigeria%20pdf', is the primary IOC, likely serving as a redirector to malicious content.

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/wb?keyword=philosophy%20of%20integrated%20science%20in%20nigeria%20pdf In PDF document text
    • http://files.bluevista725.com/uploads/1/3/1/3/131379439/nagosinuzefowa-muxaromefaj-petilo.pdfIn PDF document text
    • http://files.waterinitiativeforthefuture.org/uploads/1/3/0/7/130775475/d841eb.pdfIn PDF document text
    • http://files.pawsitivedogtraining.org/uploads/1/3/2/3/132302733/jusedafimapapakinuj.pdfIn PDF document text
    • http://files.flowjerusalem.com/uploads/1/3/0/9/130969300/degalulujire.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/1/0434/0016/7589/files/introduction_to_public_policy_and_administration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/12410237692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/44289745684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4691/0624/files/zarowubikapakebane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1420/7134/files/nofozoxibokolunikobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/vumuweka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2507/2282/files/zinunesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5480/0797/files/46233161555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4299/5352/files/buvifibagisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68769425665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7623/1072/files/bateki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/83496211513.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 6

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_off00005faf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAF 5520 bytes
SHA-256: 52c308de0b69fa660bb2fbc51f1f102bfa220ed11146ef7251c830fe5bb37e15
font_01_sfnt_off00007266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7266 10024 bytes
SHA-256: 57d0fc9ddc76fe31a21bfb811eecb54f4bcf62cca184a25e0cdfd65a55f1102b

Open this report in the interactive analyzer, or submit your own file for analysis.