Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a1986804b26fe4f…

MALICIOUS

PDF

45.3 KB Created: 2020-07-29 14:11:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74e5d8b9229606b37bbcabb03143c448 SHA-1: 944fe88d6f5c5a4c982b2034feeb860bc19bb5f9 SHA-256: 8a1986804b26fe4f7413fd6c57c4543caf14cf85f00d3780b0f91339943e25a3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm designed to appear as a legitimate download for 'Practices for scaling lean agile development pdf download'. However, the primary embedded URL, https://ttraff.com/pify?keyword=practices+for+scaling+lean+agile+development+pdf+download, is identified as a malicious redirector. The document's structure and embedded links strongly suggest a phishing or malware distribution attempt, leveraging SEO tactics to attract victims.

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=practices+for+scaling+lean+agile+development+pdf+download In PDF document text
    • http://files.soinlauve.com/uploads/1/3/0/7/130738657/bebuj.pdfIn PDF document text
    • http://files.crystalcovenrmp.com/uploads/1/3/1/4/131453998/3232106.pdfIn PDF document text
    • http://files.helpsavetroubledteens.com/uploads/1/3/1/4/131412235/8fd600177ec.pdfIn PDF document text
    • http://files.thelaurawilson.net/uploads/1/3/1/8/131871859/borunalezusi.pdfIn PDF document text
    • http://files.whoanellypress.com/uploads/1/3/1/8/131872198/jepusujabenew_xifuvovunod.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/1/0433/0687/7080/files/pajotoliwafugesekediriw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7064/files/vodifijulopajugek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/69748411671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rakapadanixip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/jomupuzined.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/43983210465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dadimutixiwukigojubiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3974/2359/files/99678385502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/moneporevegifumugavefuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6343/5679/files/70185420040.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_off000071ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EE 5416 bytes
SHA-256: 6af91ba4d0fbc6b82a91803e5dc8d01b60d344f60e3522abbe3269737cbdf607
font_01_sfnt_off00008447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8447 10152 bytes
SHA-256: f4fb694ea7b976dd98d419eaf742027c282c8f0214508a5d84d6b63558a1f7d6

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