Malicious PDF — malware analysis report

Static analysis result for SHA-256 de12048493a408fa…

MALICIOUS

PDF

35.4 KB Created: 2020-08-15 18:26:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1275fb497576e533414883c302406bde SHA-1: 71e20c58131bb3aaf5199a424259ab0c8130ff83 SHA-256: de12048493a408fa7ac8704d1ec66b14b753a5b4ca57e82e3f4567469c9b5ba6
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external PDF links, suggesting a link farm or SEO abuse. The primary malicious URL identified is https://ttraff.com/wb?keyword=interactive%20science%20forces%20and%20energy%20teacher%20edition%20pdf. While the document body contains text related to 'Interactive science forces and energy teacher edition pdf', this appears to be a lure to disguise the malicious link distribution.

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/wb?keyword=interactive%20science%20forces%20and%20energy%20teacher%20edition%20pdf In PDF document text
    • http://jiwika.mrshansen.net/uploads/1/3/2/8/132814930/7235660.pdfIn PDF document text
    • http://files.annamae22pngstock.com/uploads/1/3/1/4/131438113/e6947cd.pdfIn PDF document text
    • http://files.dianeliska.com/uploads/1/3/1/4/131407227/329453.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/1/0435/8782/9928/files/40425844846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/81875342760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/69959780647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/deved.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6443/3566/files/9418113825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5690/6918/files/japafinukevapuvomonomoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/16724736325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7034/0772/files/anorexia_in_elderly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6212/2903/files/62755885581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/79818865295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9148/3032/files/55492241455.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 3

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_off00004bb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB8 5484 bytes
SHA-256: 0df9ed6a09d3cd835973a283cc3f55b4f1b750cdab3bf4903c63ac9227f0ef1a
font_01_sfnt_off00005e5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E5C 9976 bytes
SHA-256: 94743359a9a7baceddf4e2584f1a6f483dcc004382c352a78617af4541c0d17d

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