Malicious PDF — malware analysis report

Static analysis result for SHA-256 843dc74f26c45efb…

MALICIOUS

PDF

45.1 KB Created: 2020-08-21 21:47:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de6b876a40910d048b71157f48905b5c SHA-1: 2847420448f494b6dadf6d35ea9bffa6565bcb7e SHA-256: 843dc74f26c45efb21e7db6330f7f85704b0bebef69e704bbaf4a4150790e746
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, with a primary redirector URL identified as 'https://ttraff.com/pify?keyword=anonymous+news+report'. The document body, though heavily obfuscated, contains this URL and another link to a Shopify-hosted PDF, suggesting a lure to download further content or visit a malicious site. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=anonymous+news+report In PDF document text
    • http://files.jsprincessparties.com/uploads/1/3/0/9/130969357/ecc840452.pdfIn PDF document text
    • http://files.stpaulnr.org/uploads/1/3/1/3/131379085/dujasilazi.pdfIn PDF document text
    • http://files.morrowreport.com/uploads/1/3/0/7/130776603/4ea452dbbfaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/bsplayer_win_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1423/3000/files/bible_messages_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3166/4552/files/90354298769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/poruvojap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3530/3831/files/73664240812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/general_banking_act.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/fujevubuvimoguri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8349/7623/files/dosidevato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/jexanugebofavuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/airframe_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0700/7127/files/nunuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/brahma_vaivarta_purana_free_download.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 1

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_off000065f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F6 4740 bytes
SHA-256: 0aef671808c386512a11d2614ddee4ff162b179ac3275264cf30c19b1e775d2d
font_01_sfnt_off00007608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7608 10588 bytes
SHA-256: f32c09232adb4cfca998ea18e078058b75de8c3afc4c43a46e88ca92a6c078cb
font_02_sfnt_off00009918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9918 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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