Malicious PDF — malware analysis report

Static analysis result for SHA-256 28f4d6f4b7f5fb0b…

MALICIOUS

PDF

56.5 KB Created: 2020-08-09 19:52:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dc10f462eaea57699cd32ea2a8da58c2 SHA-1: 2a170f15d1edc632ad066e8a9b87f3576c482606 SHA-256: 28f4d6f4b7f5fb0bb1153cf2b0be04ac13f285a86200ae5b9dd3f32424b4c1a8
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a link farm hosted on Shopify, designed to appear as legitimate technical documents. One critical heuristic indicates a direct link to a known malicious redirector at 'ttraff.com'. This suggests the document's primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the PDF structure and embedded links strongly indicate a malicious redirection 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=titanium+alloy+properties+pdf In PDF document text
    • http://files.precisionskitune.com/uploads/1/3/0/7/130739664/pijugamowilozaku.pdfIn PDF document text
    • http://files.shuryukankarate.com/uploads/1/3/2/6/132681443/refilujutatatejoxure.pdfIn PDF document text
    • http://files.newreach.com/uploads/1/3/0/8/130874317/416eacc5386200c.pdfIn PDF document text
    • http://files.rockpcmo.com/uploads/1/3/1/0/131070151/ad69bef46cfa.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/1/0429/9508/9559/files/89131196563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3697/8849/files/kingdom_animalia_phylum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/76143768634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/geseziturikubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/21731773406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36726725464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7243/7913/files/64110272348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/24948656340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4011/1782/files/58033051308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2869/9553/files/natiruts_sorri_sou_rei_cifra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7451/8178/files/ageusia_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/juzoderinaguj.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
🗂 Part of campaign: lapasd.com 5 samples

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_off00009e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E24 5236 bytes
SHA-256: 56c2c1dcc5a45cab40b28a9cc3662fb9161ed066d27098a9542d1c2613bd61f1
font_01_sfnt_off0000afe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFE8 10756 bytes
SHA-256: 9d89aef5b418f77ae3ccd8d6e42b343ee0917a3bffd20b544935fd48bf87a124

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