Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef6329c465e0f01…

MALICIOUS

PDF

35.2 KB Created: 2020-08-02 21:57:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e206fb8f5e7df090b188d437c76aee5 SHA-1: bf36fafd1b319da1334e96717f7b6e166b815743 SHA-256: 9ef6329c465e0f0184f466ce94c1437cc31bdbbfb83238e8bc5cf855a536804d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). The document body, though heavily obfuscated, contains text related to 'Loudon organic chemistry 5th edition pdf' and the wkhtmltopdf application, suggesting a lure to download a pirated textbook. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further 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.cc/pify?keyword=loudon+organic+chemistry+5th+edition+pdf In PDF document text
    • http://files.yalenotredamelaw.com/uploads/1/3/0/7/130738870/tixanapiseletod_terebo.pdfIn PDF document text
    • http://files.karenscateringllc.com/uploads/1/3/1/8/131871488/5386996.pdfIn PDF document text
    • http://files.ps111adolphsochs.org/uploads/1/3/2/7/132740965/71240183698.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/1/0430/1537/2949/files/wikovepapozijub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/vowovegiwisagilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/giwatenunepupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3058/4213/files/68967108393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7810/6779/files/nariba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/91740261405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/vopibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/52805267582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/99395003404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/65512914653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vekedexixerokasadoboma.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 6

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_off00004a1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A1A 5704 bytes
SHA-256: d77f3c1b68da08e910bce3e0779c8299a4ec43e56edf8378a80441fff5775a42
font_01_sfnt_off00005d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6F 10164 bytes
SHA-256: 93edef1958201371346de718fffdc023893f5b57c0059426e2faea84b4514cfd

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