Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4c9e9a44dd14d5…

MALICIOUS

PDF

32.0 KB Created: 2020-08-19 13:26:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3cefdfe6e564d110421ea03e84761be SHA-1: 20ed016a8b2d866eb1698887c915fc505c6646f8 SHA-256: 9d4c9e9a44dd14d5f0a783c48795bce3d74ecf882059d4a98ace55fd97b8f48b
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.cc. The document body, though heavily obfuscated, contains text related to a 'jig drill guide kit' and the malicious URL. This suggests the PDF is designed to lure users to malicious infrastructure by masquerading as a relevant document. No scripts were extracted from this sample.

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.cc/pify?keyword=jig+drill+guide+kit In PDF document text
    • http://files.dftly.org/uploads/1/3/1/0/131070112/4374112.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/1/0434/6717/8134/files/sowoselupepavuxukesif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0209/9872/files/police_bharti_2019_gujarat_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7728/6565/files/dadobozizama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/41786135085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/remove_watermark_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/cadette_outdoor_journey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0197/files/dugazelag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5845/3918/files/64726168393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/76892145528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1828/8284/files/husqvarna_yta22v46_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9291/6891/files/42608889324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6354/9847/files/86398614421.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_off0000420d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x420D 4656 bytes
SHA-256: 1e69b4daba4c12f57177c3d5100be9bb42ebd3b815e9cca69a153a4861fe9521
font_01_sfnt_off000051eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51EB 9920 bytes
SHA-256: 0cd620ab7efb212537f983541910177c8392c3d9afab4b45e95443312251ac97

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