Malicious PDF — malware analysis report

Static analysis result for SHA-256 5130491d69f362aa…

MALICIOUS

PDF

67.7 KB Created: 2020-07-31 23:46:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f88304bcd466b728320cae0611ba489 SHA-1: 151d0414d36f25e0e2638633f089fe7f47b77892 SHA-256: 5130491d69f362aafedc4c6fd1cc669576863e54011955e6d0ea569c43ebd493
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains text that appears to be a lure for educational materials, specifically referencing 'Zumdahl chemistry 9th edition solutions pdf'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the embedded URL. The ML classifier also strongly indicated maliciousness.

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=zumdahl+chemistry+9th+edition+solutions+pdf In PDF document text
    • http://files.gmgaentertainmentproductions.com/uploads/1/3/1/4/131454052/2670412.pdfIn PDF document text
    • http://files.handystansplumbing.com/uploads/1/3/0/7/130776490/5474087.pdfIn PDF document text
    • http://files.dcpd.ca/uploads/1/3/1/8/131872037/8985160.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/1/0431/5525/9560/files/44357313787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/83723179507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/zoxegofifisoborataz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8475/0741/files/livajexamigoderunuzaweja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7233/1675/files/60900515937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4616/4897/files/88025724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/goforazezexuselow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/7942578967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7194/6396/files/50207523664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/50374984179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/68197385282.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 4

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_off0000c9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D1 5612 bytes
SHA-256: 82a555155e1433e67f841ec65ec05b272a41eb4d30bb6af6cca2cbc27cc3c925
font_01_sfnt_off0000dcc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC3 11008 bytes
SHA-256: 2400d6dcb7dbf5a084318b2e7065f6ed799a51a986f1de99519089c0b2b0d23b

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