Malicious PDF — malware analysis report

Static analysis result for SHA-256 5018c4381bfd9692…

MALICIOUS

PDF

40.2 KB Created: 2020-08-07 23:59:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41936274e5a3c89e033f3577351d2fac SHA-1: fd5e44850a954ace304cd462a19dd3523364931b SHA-256: 5018c4381bfd969298588b82a41611d808c4e24e88991cb2af403015a07eb0c9
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the text 'Multiplying worksheets pdf' and the URL 'https://ttraff.com/pify?keyword=multiplying+worksheets+pdf', suggesting a lure to download a malicious file. The PDF also contains a large number of links to external PDFs, many hosted on Shopify, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content.

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=multiplying+worksheets+pdf In PDF document text
    • http://kodugit.pathway2well.com/uploads/1/3/0/7/130738943/1913712.pdfIn PDF document text
    • http://files.pianomethod.info/uploads/1/3/1/4/131437242/gusiribisewixejukero.pdfIn PDF document text
    • http://kavej.mycookielab.com/uploads/1/3/1/3/131383314/nuvexanet-noruja-gosipusipibe.pdfIn PDF document text
    • http://libal.wilkensestate.com/uploads/1/3/1/8/131856772/9110938.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/1/0437/7850/6909/files/sub_vector_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5297/2697/files/68385009601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/gisovilepowutepawuruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7058/6006/files/82776965148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0046/2501/files/digotozevewujuvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/tarototejox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/introduction_to_geographic_information_systems_chang_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/96667738711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9760/2713/files/86787036303.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 3

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_off00005f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4D 5356 bytes
SHA-256: f8c986830c5c2fb02547903fd1f720880dfd3198724419c99ca8bda03b209e09
font_01_sfnt_off000071a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A9 10132 bytes
SHA-256: 7e81a15859ac216379745ca474323b312a743107410d7269a541c75ae85bbb08

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