Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4c71db9b4c2a9e…

MALICIOUS

PDF

52.5 KB Created: 2020-08-05 22:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25bcde5a18154a06a30114d0cfdc64f4 SHA-1: 7f5d0dc9eb697ba3bdbfa1c0d9d31f47127caac4 SHA-256: ed4c71db9b4c2a9ef940396112566675b60e8bc215b76b3575fbde43a0bf08b7
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link to 'ttraff.ru' which is flagged as malicious. It also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness. No scripts were extracted, but the presence of the malicious URL and the link farm strategy are sufficient indicators of a malicious intent to redirect users to harmful 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.ru/pify?keyword=change+management+definition+pdf In PDF document text
    • http://files.lorraineparishwriter.com/uploads/1/3/0/8/130873870/lobojixo.pdfIn PDF document text
    • http://files.iemthomas.com/uploads/1/3/2/6/132696030/nivuwebexibuku.pdfIn PDF document text
    • http://files.learningandbehavior.org/uploads/1/3/1/4/131409526/juvatizorajame.pdfIn PDF document text
    • http://files.thepottersstudioca.com/uploads/1/3/0/7/130775432/livubemuzi.pdfIn PDF document text
    • http://files.ztkarl.com/uploads/1/3/1/3/131383283/4060281.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/1/0430/0252/7897/files/89749073300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2894/5815/files/13722815108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8897/5774/files/68407759815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/pixuworuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/31597581216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/5800313926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0810/files/vadamepoweropi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/60851743626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6166/5192/files/menusatuwutibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/61778480466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/xopas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/zironojowobufagimojuxun.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_off000090df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90DF 5056 bytes
SHA-256: 0748cf5225d3d7b361c192c53ec0410bfb8469a2e300d1c2bf9f99a8654ce824
font_01_sfnt_off0000a1f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F2 10408 bytes
SHA-256: d29c34ad75e4ccfddc165f39e1013d3e607cf42afa47d2f8d6ebd360e85268d4

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