Malicious PDF — malware analysis report

Static analysis result for SHA-256 8548ab0c81869a78…

MALICIOUS

PDF

40.7 KB Created: 2020-08-09 12:44:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 06bd22fa82cd36767821adaf878ec9b3 SHA-1: 57ec452a9a5ebf2af171dd8e566160dab161aca1 SHA-256: 8548ab0c81869a78f34f488f70c579aa93cf5bba064da2859c9aae9879b2b418
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically `https://ttraff.com/pify?keyword=genetics+laboratory+investigations+pdf`. This technique is often used for phishing or distributing further malware. The ML classifier strongly indicated maliciousness, and multiple heuristics fired related to malicious redirector links and SEO link farms.

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=genetics+laboratory+investigations+pdf In PDF document text
    • http://files.chinchillaphotography.com/uploads/1/3/2/7/132710784/dudiwimezefi-gukeluxodi-lifikipezufi.pdfIn PDF document text
    • http://files.ilovewatervalley.com/uploads/1/3/2/7/132741556/54c3b5.pdfIn PDF document text
    • http://files.utahversatility.com/uploads/1/3/1/3/131380592/5323111.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/1/0433/0687/7080/files/woburorofinuxup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2700/4577/files/26897357462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/rafusopibabilape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/najolelones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6871/0300/files/pogivagigogetixek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8306/2695/files/definitive_body_language_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0532/1109/files/78623453445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/zilunovukujonuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/89821614756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1808/3742/files/5553267624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1576/4128/files/66689277955.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 2

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_off00006069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6069 5656 bytes
SHA-256: d8085ea67c63fbc00e8a66391491f015f93b85d12e97eb1ea909ab97b1bfa3a9
font_01_sfnt_off000073c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C5 10076 bytes
SHA-256: 7ecadcb113125c275ff49c121e4d8f4c9595d06ef93091511fc720c216d5a1f0

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