Malicious PDF — malware analysis report

Static analysis result for SHA-256 ced41a41a1c2f014…

MALICIOUS

PDF

67.1 KB Created: 2020-08-25 05:06:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 958c0278f40b0818d4248e43b2a05512 SHA-1: 1f03748a86415fd0523596b4354343e5972a5fc1 SHA-256: ced41a41a1c2f014e5e3034dcf8867678b2d73f3c7fa6dad0a7dca239576be3b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Factors affecting chemical equilibrium worksheet answers' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. The presence of numerous links, including the malicious one, indicates a link farm or redirection strategy to obscure the final malicious destination.

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/pify?keyword=factors+affecting+chemical+equilibrium+worksheet+answers In PDF document text
    • http://files.onegirlmanyideas.com/uploads/1/3/1/3/131383727/5363834.pdfIn PDF document text
    • http://files.inthelaughterlocker.com/uploads/1/3/2/3/132302732/9162444.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/1/0447/7688/2327/files/retinoblastoma_elsevier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/54816134147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3236/2390/files/sejobejusatowomotobuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2560/3488/files/pexiluzabas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8270/3257/files/acid_rain_chemistry_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8286/5047/files/28812468344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/jixedetate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6303/1448/files/borders_railway_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/63587102340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2679/2098/files/technical_chart_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/32396474887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/strategic_alliance_agreement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/mopegigisatifurapabok.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_off0000bf6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF6A 5672 bytes
SHA-256: ebb40de32c04dc5ca9c5c17207ef05fd5feaa8ad229da4c6f0eef311ee3a5545
font_01_sfnt_off0000d29c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD29C 13864 bytes
SHA-256: 7f33d1a47dce59795a0536f7591c27c3a7e3833dc8cc00a098a8c8e6a1a0bcca

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