Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e7b939a3a9a324a…

MALICIOUS

PDF

50.7 KB Created: 2020-09-18 03:42:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97507b8a6a4a6343e91b9401b57e730d SHA-1: 40c5be89429100db5a8888e4938413ba55975ca1 SHA-256: 5e7b939a3a9a324a242c8111c77dfd060a2ae3214974d21d4ffa2d4bd80c3b1d
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to potentially harmful sites. The embedded URL 'https://ttraff.link/wix?keyword=worksheet+potential+energy+problems+answer+key' is presented as a worksheet answer key, likely a lure to trick users into clicking. The ML classifier strongly supports the malicious nature of this PDF.

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.link/wix?keyword=worksheet+potential+energy+problems+answer+key In PDF document text
    • http://vitoxesuz.chrisscables.com/uploads/1/3/2/7/132710497/5352792.pdfIn PDF document text
    • http://files.cdpirelandnetwork.net/uploads/1/3/1/3/131380292/8304244.pdfIn PDF document text
    • http://labole.kardasystems.com/uploads/1/3/2/7/132740352/9925772.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/1/0433/0074/9467/files/podujujilamaduz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/gegop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7504/2457/files/rajasthan_patrika_bhilwara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/asus_maximus_vi_hero_overclocking_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/mavi_en_scak_renktir_izle_trke_dublaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1284/0872/files/96260356505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/cbse_class_12_maths_question_paper_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/encounter_shankar_movie_song_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/lalifodimoviteriguz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8831/8116/files/57678038843.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 1

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_off0000855e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x855E 5644 bytes
SHA-256: d84358e1a65b53e5c088398a3deed64fac0ac7406726824c2f9f59c5d99eba77
font_01_sfnt_off00009884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9884 11272 bytes
SHA-256: 8065b389a08e097b3995894e03fa3c99349d78bfb1bcc66bb3d0fb68b862785f

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