Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ea8e745e24c5a1f…

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 16:40:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 42ef64255730249150c94f8cd8275c7d SHA-1: fd415db6a8dd2fc41c788b17280f1f8acfed607f SHA-256: 3ea8e745e24c5a1fbf6c714f812f9e3bb4e706ed48b267553f5082696ac5a8d8
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 of which point to a link farm hosted on Shopify. One of the embedded links, 'https://ttraff.cc/pify?keyword=determinants+of+academic+performance+of+students+pdf', is identified as a malicious redirector. The document body, though partially corrupted, contains text related to academic performance, likely a lure to disguise the malicious intent of redirecting users to potentially harmful sites.

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=determinants+of+academic+performance+of+students+pdf In PDF document text
    • http://files.nealybirthandlactation.com/uploads/1/3/0/7/130775025/93c4ce71e.pdfIn PDF document text
    • http://files.bargeadhesive.com/uploads/1/3/1/6/131636814/9822e5130d88b3.pdfIn PDF document text
    • http://files.effectivekckschoolboard.com/uploads/1/3/1/3/131398479/xikewokitat_gudobuv.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/1/0431/8117/9048/files/15663645160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/puwolitijupor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/california_yellow_immunization_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6763/5867/files/51377471106.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/pilotedebolazogalinuzeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8054/files/88943058701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2496/2968/files/25642071728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/odt_en.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/47666398623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7706/5121/files/holistic_nursing_a_handbook_for_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5399/8487/files/velinobefofazopizerozuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1285/files/all_arduino_sensors.pdfIn PDF document text
    • http://www.flickr.com/photos/alamosbasement/In 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 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_off0000626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 5268 bytes
SHA-256: 94e58f640e396ea12772f8c07395842aa471fe5414401dfe0531e55525342a3f
font_01_sfnt_off00007438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7438 9700 bytes
SHA-256: 7784f52f28c6dc2d95435005d891fce92aa1d4b909567d58e6ecbb73d7f22f38

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