Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b61be6c33e9709…

MALICIOUS

PDF

43.8 KB Created: 2020-08-02 08:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15d0c0acd9603081ffb6233c96ca7b71 SHA-1: a0425217b9f2c77d2ef748efad2c08e134899895 SHA-256: 85b61be6c33e97092fd57aeb43c7c4e0e438e600a0b13b3f136bf005b824e557
294 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is known to host malicious content. The document body and heuristics indicate social engineering lures, such as 'Dns server unavailable', designed to trick users into clicking these links. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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=dns+server+unavailable In PDF document text
    • http://files.thorneaircon.com/uploads/1/3/0/7/130776336/7586637.pdfIn PDF document text
    • http://files.mx.cbisociety.org/uploads/1/3/1/3/131383673/nudogajilanigulu.pdfIn PDF document text
    • http://files.keckmanagementroofing.com/uploads/1/3/1/3/131380612/xofulikokogeg_dutiribosavimep_ripes_mobilomipuxodo.pdfIn PDF document text
    • http://files.shadowoodgolfshop.com/uploads/1/3/1/4/131452836/kekefudorazove-redusuvaf-vasesilefur-pujaxufuvusipim.pdfIn PDF document text
    • http://files.childrensbenefitconcert.org/uploads/1/3/2/7/132740580/57d4023.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/1/0431/8583/2096/files/revexeged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/56675003189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7544/4631/files/97797316430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/mujelivonuvumavevot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/vinewunuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7328/1948/files/mafujitinugemakuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/9500912351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5297/1685/files/silver_strand_surf_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3435/2548/files/zikowirasaxugulukitas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9830/0823/files/25498063105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/53536361745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6361/4369/files/kigobosinopimepalufa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4260/9051/files/sopuve.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_off00006519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6519 4880 bytes
SHA-256: 039b62c9ea75ea4d8c5604b7c0b5cbe34f5ad2a4c8e280a72fbf636838e88769
font_01_sfnt_off000075c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75C3 14472 bytes
SHA-256: e4cc5ab2cc34c8f21f514f6ba5c095819fc9fba3fa60f60312a8ecd766cee8b9

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