Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9944a0432c8cf99…

MALICIOUS

PDF

114.7 KB Created: 2020-08-12 19:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: de7290588fbc358b44a210e0978b8258 SHA-1: 8e8a1548596fb9c8cef5d1542cae5923cd99312b SHA-256: e9944a0432c8cf99175ab4c228753cdcac9114952aceef5741a9e09fb52f0271
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including a critical finding of a link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same URL. The presence of a 'download button' heuristic further supports a lure-based attack. The primary attack pattern involves redirecting the user to a malicious site under the guise of downloading an academic paper.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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
  • 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=indonesian+journal+of+applied+linguistics+pdf In PDF document text
    • http://files.planningprotocol2.com/uploads/1/3/0/7/130775197/vusuralesulus.pdfIn PDF document text
    • http://zuvujokon.reysroast.com/uploads/1/3/2/6/132695744/3319898.pdfIn PDF document text
    • http://files.birth-roots.co.uk/uploads/1/3/2/6/132695663/wonemawak.pdfIn PDF document text
    • http://files.jorusin.com/uploads/1/3/1/4/131454986/f12a8529dc2e1.pdfIn PDF document text
    • http://burujese.pawneecityboe.com/uploads/1/3/0/7/130775493/jinufesu.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/1/0439/1275/7400/files/anne_rice_beauty_s_release.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1899/3320/files/33983796125.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4449/4760/files/anemia_ferropenica_oms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/wozaropikorinupix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/29724689038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2539/2035/files/vivurunivekerofuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/lanawuvikubumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/73150172068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4573/8903/files/computer_systems_organization_and_architecture_carpinelli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2029/6090/files/nogoroze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2424/5155/files/comfort_zone_heaters_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1743/6327/files/korefonuveradokapofosow.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000185ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x185CA 5336 bytes
SHA-256: ef1fb485b869e650e527360961c5ddfd9aaf8545ce9d10b3454500de9a3acf6b
font_01_sfnt_off000197ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197FF 11180 bytes
SHA-256: 7f78fd89ec5f8a2623b43bad080e062832588b031b1ca0e21f5125491b697ef0

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