Malicious PDF — malware analysis report

Static analysis result for SHA-256 1274bbb1fb7c4740…

MALICIOUS

PDF

44.9 KB Created: 2020-08-04 16:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 29fa52740575453347b1b37bc724c1dc SHA-1: e941386274fe23f6810cea7b0653ad4137c8b4ce SHA-256: 1274bbb1fb7c47403739d9c4c01592752c31fed987e34e6a7f76c09f226a8ec2
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that redirect to malicious infrastructure, specifically identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains text that appears to be a lure for "Concepts of networking pdf". The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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=concepts+of+networking+pdf In PDF document text
    • http://files.withlovefarah.com/uploads/1/3/1/8/131871744/cb54569fe26.pdfIn PDF document text
    • http://files.tankuanaw.com/uploads/1/3/1/3/131379612/eda4253071.pdfIn PDF document text
    • http://files.wellbeankidsyoga.com/uploads/1/3/1/4/131408209/1375672.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/1/0438/7838/3771/files/minecraft_server_unable_to_access_jarfile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8506/9478/files/naruto_shippuden_movie_6_english_dubbed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/mozelozomugavumafotoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/7538672801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/66182913030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/medimud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8767/6063/files/nitudexufawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/sovemonupilumepes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mipin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/summary_writing_exercises_with_answers_igcse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3366/4420/files/fovajas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zawitowawipujeko.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 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_off00007213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7213 5144 bytes
SHA-256: d3bfab9e41b9763e01b9f6725e809821ed354266703a6edcd4100dffb64a953b
font_01_sfnt_off000083ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BA 10180 bytes
SHA-256: 36e2faaed3ba11dc3e61fa73cbaf617df64fa3351f4417c8073937bddb384917

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