Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44efb190dfad4f8…

MALICIOUS

PDF

42.8 KB Created: 2020-08-06 05:54:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 809239025178251af711225b3e86f03f SHA-1: c17855e1ac5ff6d9a7000e6d5400f6526258c49a SHA-256: e44efb190dfad4f83c74222703d4b178322edbbd714e6bde0410e32d3b06c070
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to known malicious infrastructure. It also fired for PDF_SEO_LINK_FARM, suggesting the document is part of a link farm designed to manipulate search engine results. The embedded URL https://ttraff.com/pify?keyword=thyroid+and+antithyroid+drugs+pdf is the primary indicator of malicious redirection. The document body, though heavily obfuscated, contains references to the malicious URL and other URLs hosted on Shopify, likely as part of the link farm.

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=thyroid+and+antithyroid+drugs+pdf In PDF document text
    • http://files.bremertonfoodline.org/uploads/1/3/0/9/130969545/67e7154f18e0354.pdfIn PDF document text
    • http://files.intechsol-pr.com/uploads/1/3/2/6/132695636/vijana.pdfIn PDF document text
    • http://files.boomerbones.com/uploads/1/3/2/7/132740281/dexenulet_tozisol_fakerixidakuvo.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/1/0434/1897/6414/files/agile_scrum_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/60175887640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/pifosisunizin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3789/2509/files/57982885697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/6273771244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4646/1852/files/67800520418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/zosiwekebulexixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/jiresaroloronumuvaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/xeledumagerafixomek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7122/files/mitazixijeludefuliretaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/why_did_notsobot_get_banned.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_off000069cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CC 5320 bytes
SHA-256: dc21e25e5e8e54822b2ee1a25e435c7bb1d7b70772116311df0c6415c8a69fce
font_01_sfnt_off00007bec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEC 10168 bytes
SHA-256: 1ad9cfda1ebaec193fb4e87d3242457a747cebdaf79d4e8db715d6e1e6698857

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