Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a6f1b70e3c6768…

MALICIOUS

PDF

65.4 KB Created: 2020-08-25 13:43:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8bbf1f639d446556c5d53b3fa4ef08a SHA-1: 8d872f91e8b669f3eaad6e6277dc67a3c2fab62a SHA-256: 76a6f1b70e3c67686279fa808e9778fdc7f1c9e8ef1ef1ef75ab679a4fd3cdaf
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a redirector link to 'ttraff.com'. This suggests the document is part of a link farm designed to drive traffic to malicious infrastructure, likely for phishing or malware delivery. 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=al-+bukhari+pdf In PDF document text
    • http://files.ceasefireworld.com/uploads/1/3/2/6/132682039/2045248.pdfIn PDF document text
    • http://files.napiercounselling.co.uk/uploads/1/3/0/7/130739537/3e003317776d82d.pdfIn PDF document text
    • http://files.protononprofit.com/uploads/1/3/1/6/131606984/b06d256f715.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/1/0434/6380/3046/files/96748341150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/gerujenasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/64470911193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/cs_go_autoexec_location.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/adobe_rider_7._0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2363/8426/files/renasakepisilino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/96224299404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2083/7287/files/wavepad_free_softonic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3544/3871/files/bibalivumolizelilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/lukesevewixiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6400/8610/files/lexirunu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000085ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EF 4644 bytes
SHA-256: 2f30ae68e2d20e6fcb5106cd1e76decf4b4af903e700c2a4ec17a5706b70ac06
font_01_sfnt_off000095b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B4 17116 bytes
SHA-256: 22f1ef7669f0c479205f17e1cc0024757ceb35067fd4c7d31ce6fe19004789d2
font_02_sfnt_off0000c7af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7AF 21204 bytes
SHA-256: d5d790309c58b3bb35f75531d12dec6b5c8970fbf1272490d10efc4ad428793a
font_03_sfnt_off0000ead2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD2 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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