Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf3de941b7e8dc14…

MALICIOUS

PDF

33.7 KB Created: 2020-08-15 05:22:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b653b2dd3543e48e0a617990b3ec3295 SHA-1: 447209f29c477fb1c9663e65b2ff8bdfe1be06dc SHA-256: bf3de941b7e8dc14a68bf5e4c5eb09bf65cd7ce8024bb2d2711cd8774a1f9ccb
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 directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=hydrometer+analysis+lab+report', which is flagged as malicious. This suggests the PDF is part of a link farm or SEO poisoning scheme designed to drive traffic to malicious infrastructure.

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=hydrometer+analysis+lab+report In PDF document text
    • http://files.charaliliana.com/uploads/1/3/1/3/131383318/226648.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/1/0432/9409/7576/files/genetics_mcqs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7228/0993/files/sony_2._1_sound_bar_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2416/1695/files/vubizofok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/sorting_and_searching_algorithms_a_cookbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4013/5575/files/administrao_da_produo_e_operaes_moreira_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8357/files/siroruragusofinogejovagos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/22805348114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5010/6018/files/godagozozifuvap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1658/3325/files/albeniz_granada_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3032/8997/files/natexexixamupazili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/administrao_da_produo_slack_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6102/6719/files/fazur.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_off00004710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4710 5308 bytes
SHA-256: 876f7312240fba9f78e31a700aa32f0d8a91a90c7857f857e9a1e22e6adc727d
font_01_sfnt_off00005901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5901 10196 bytes
SHA-256: 2b0682dc0be89fde7d0b4d3e60cd8938d70e313a101ced30a8ebda55bc0ba1cc

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