Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8072b2931644b2c…

MALICIOUS

PDF

44.5 KB Created: 2020-08-01 15:32:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab6db2e39010fec953f62770c886d81b SHA-1: 7d514aab8b4094dbc66c131ed990dd87d1210ed5 SHA-256: e8072b2931644b2cf6d2d2b3d0a40dd6f0df313103ff4eb5ee369ddcdd6deee8
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing for a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Autocad 2016 tutorial pdf', aligning with the malicious redirector's keyword. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning to drive traffic to malicious sites.

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=autocad+2016+tutorial+pdf In PDF document text
    • http://files.nhmusic.org/uploads/1/3/2/7/132712050/4306423.pdfIn PDF document text
    • http://files.mackidz.net/uploads/1/3/0/7/130738859/vuwir_gibibe_soloxer_xewutuwire.pdfIn PDF document text
    • http://files.sharonreay.com/uploads/1/3/1/6/131606864/lorofa-gumokake-kudod-dizajiwop.pdfIn PDF document text
    • http://files.lambdanusigma.ca/uploads/1/3/1/4/131409621/eccc51a4b054234.pdfIn PDF document text
    • http://files.aicphr.org/uploads/1/3/1/4/131408170/ribide-movivit.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/1/0437/3364/7525/files/zokogelogonopudibazexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7487/9641/files/90848509885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0106/7166/files/taxuxexixesamekonuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3730/2690/files/93695594294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/8399501412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/wor_file_extension.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0211/6772/files/jovuvituti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/95366696895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9119/8112/files/85441860257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/serananovuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3706/4348/files/24540078120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8387/files/back_button_html.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 5

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_off00006fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEA 5440 bytes
SHA-256: 7bda3148a73c748b5f9a0caaf0dd83bea29f11dd7fb3f92abe5657ef5c7b77cf
font_01_sfnt_off00008282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8282 10032 bytes
SHA-256: 10b0db16306a86a7560aa6c07ea5578677753ed47257813866555c085f943831

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