Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec92b808c7af0e0…

MALICIOUS

PDF

43.0 KB Created: 2020-08-03 03:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a7c53e3bbe31924130981d7b12cbf80 SHA-1: c8e107922f4e1bc1d891ce7557364a8ed0238fac SHA-256: 9ec92b808c7af0e083fb3f5becb605d976f28a8f70fe3863c1ed5c2d810070b8
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector at https://ttraff.com/pify?keyword=install+github+linux. This indicates a phishing or social engineering attempt to direct the user to malicious content. No scripts were extracted from this sample, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=install+github+linux In PDF document text
    • http://gumiwu.profetis.net/uploads/1/3/1/6/131607712/e6c3d4fcf8541c5.pdfIn PDF document text
    • http://files.stickittothestigma.com/uploads/1/3/1/6/131606968/kizejukezol.pdfIn PDF document text
    • http://files.watervillefederated.com/uploads/1/3/0/7/130776562/54260891.pdfIn PDF document text
    • http://files.jessicabarkltheaterartist.com/uploads/1/3/0/7/130775974/menanuvoniked_gorewo.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/1/0431/7046/3912/files/82082542404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/gotham_s03e01_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/3054240339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0686/8126/files/sukududenosemis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5765/9547/files/gixus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/xufixakejozunez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/66364571436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/99056879774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/66943057592.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_off00005ebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBE 4652 bytes
SHA-256: f16779e9d01c672d056fd8c586ed7e72b3d947e78a4be63f03871bf6b560dc4e
font_01_sfnt_off00006e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E70 10212 bytes
SHA-256: 812be5f77408c14164c57fad680021cb076c97e81b48ac31b2659bbd7f5d1058
font_02_sfnt_off0000917b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x917B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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