Malicious PDF — malware analysis report

Static analysis result for SHA-256 751f776bf60f0453…

MALICIOUS

PDF

49.6 KB Created: 2020-08-06 01:50:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: defd5f142c5bb3dcda615aa1f77fb65f SHA-1: e73c3feda638d7d9e9b4c6d7af9ff249c8034a7a SHA-256: 751f776bf60f045346d07f09414fb351b57dc5f67acca0ae7ad9d930b4d50ce7
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDF files, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to lure users. The primary redirector URL, https://ttraff.cc/pify?keyword=common+laboratory+apparatus+and+uses+pdf, is flagged as malicious. This suggests the document is a phishing lure, likely attempting to deliver malware or redirect users to malicious websites under the guise of providing a useful document.

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=common+laboratory+apparatus+and+uses+pdf In PDF document text
    • http://files.murrayfreedomfestivalne.com/uploads/1/3/1/4/131407802/vopuvebub_nadufanunuda_fopofopefazimo.pdfIn PDF document text
    • http://files.common-ground-communication.org/uploads/1/3/0/7/130740458/b1fc3f5c7abf.pdfIn PDF document text
    • http://files.awarenessofnothing.com/uploads/1/3/1/4/131409755/burutowadi-rakogomiduf.pdfIn PDF document text
    • http://files.musky-lures.com/uploads/1/3/1/4/131482887/e8457.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/1/0430/9201/7305/files/lawesixozuganajeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4311/0555/files/pufesolagiriravigufurona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6630/1343/files/escience_labs_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/34631833091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8835/4207/files/werewolf_artifacts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7853/3791/files/auditory_phonetics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7726/1729/files/31015626611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9635/0624/files/35108291982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4042/3592/files/dulusaruxer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7967/0689/files/33258730589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/45228038586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5297/1685/files/nys_45_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/2945266278.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_off000084ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CA 5332 bytes
SHA-256: 4d44cfe06c3da096a108f2530e85b549bb081914bc09207f7e69a74120c18e73
font_01_sfnt_off000096ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96CE 9956 bytes
SHA-256: 8f2198bc643c5f875245ea936ea90d340ca21dc048d67ac62e6c71fd134f2292

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