Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1c3be763067c59…

MALICIOUS

PDF

39.4 KB Created: 2020-09-18 17:23:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0a0d10f2fc31d7e8e161345e354aea8 SHA-1: f099eb12f1f8bcbfa2559cbfb7ee6356a365c63e SHA-256: dc1c3be763067c59f2ac2572f110211293c79e5164d70e0253be93d4ac3bec80
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.club/wix?keyword=nursing+philosophy+examples+portfolio'. This URL is presented within the document body, disguised as a nursing philosophy portfolio. The PDF also contains a link farm heuristic, indicating a large number of outbound links, many of which are to benign-looking PDF files hosted on file-sharing services, likely to improve SEO and mask malicious activity. The ML classifier strongly flagged this PDF as malicious.

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.club/wix?keyword=nursing+philosophy+examples+portfolio In PDF document text
    • http://files.bradvanambergrealestate.com/uploads/1/3/2/6/132681513/sopiwe.pdfIn PDF document text
    • http://balaletij.worldpairsangling.com/uploads/1/3/2/7/132740186/fibatapiwev.pdfIn PDF document text
    • http://files.onemomentofpeace.org/uploads/1/3/1/4/131453847/3722995.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://897461ef-908d-43c9-a6c1-fcf5412b383d.filesusr.com/ugd/18ee90_592ab9da02ed4051bfc90a9e8f7e4aef.pdf?index=trueIn PDF document text
    • https://45f8c87a-b277-4083-b928-28e5517c5dc2.filesusr.com/ugd/96768c_de1a3a73550345978584d0ff3980cfe8.pdf?index=trueIn PDF document text
    • https://252d0e2d-9816-41a5-82e8-c8570aef2c81.filesusr.com/ugd/681527_2774183fe1c347689ec7fdc6ad2de0cd.pdf?index=trueIn PDF document text
    • https://e191a511-2be4-401b-a8ff-8a7ba0c0756e.filesusr.com/ugd/ebcc4b_78cd136724b443cbb5684bac50be2799.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/2906/5639/files/practice_worksheet_parent_graphs_of_trig_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/chloroform_means_in_arabic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/55351356887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/liverpool_fc_match_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/87228443711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7818/8198/files/story_elements_worksheets_8th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/9061139310.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_off00005dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAD 5452 bytes
SHA-256: 96ba292bddce52b1902003645c1a57fbd15389f78ae28afa1881c434a6b01831
font_01_sfnt_off00007024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7024 9536 bytes
SHA-256: 54b48ac4bff86ab0f7d4505dc81d6754f74e86ddde29b05b6269802e669f204d

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