Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d20889488bfafd…

MALICIOUS

PDF

54.6 KB Created: 2020-07-28 16:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6eaa323682395032d77da55b61ead63a SHA-1: b7455f6deb05804b4d27197b25484eb4894b7e14 SHA-256: 18d20889488bfafd4e22debdc686587c32717a3b9ffa6151d0fe410340c7d045
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to redirector infrastructure, specifically `https://ttraff.com/pify?keyword=bootstrap+signup+page+templates+free`, which is flagged as a malicious redirector. The document also includes a large number of links to external PDFs, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness, and the overall structure points towards a phishing or malware distribution attempt.

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=bootstrap+signup+page+templates+free In PDF document text
    • http://files.with-piper.com/uploads/1/3/0/8/130874025/wakafewuto-kirufolidenax-kewerijuvamujev-nazemu.pdfIn PDF document text
    • http://files.olddominionhoundsponyclub.com/uploads/1/3/1/4/131438226/vowejavofe_ruvewo_gureguxelila_robodegupazog.pdfIn PDF document text
    • http://files.highsandhellos.com/uploads/1/3/2/7/132740293/voxesolexetug.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/1/0431/0489/5143/files/12507023857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8493/0462/files/tezagixolekavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6640/0673/files/50255984672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7194/7430/files/72765545293.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9579/1518/files/9762215439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2717/6344/files/vedokenelutowonunisovad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2962/6017/files/5524979559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1188956193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2028/8153/files/37774210400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4879/6309/files/39287662895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/54260642517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6569/5638/files/66154890892.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_off000099b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99B5 5152 bytes
SHA-256: 8d04812820e1428f84a3876f160b89640a790b169a520652e328ef401e721c8e
font_01_sfnt_off0000ab28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB28 9984 bytes
SHA-256: 154b17adc086110f68bc655661a42e5576a115155c58bc81af4bae807805e6a5

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