Malicious PDF — malware analysis report

Static analysis result for SHA-256 f021f6c052b1b1e0…

MALICIOUS

PDF

38.0 KB Created: 2020-09-20 04:40:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d43de5b9deff62e3e015f8439914313c SHA-1: 2f82e4e9dae4ad0f8cb50577ec7a77f0aaf61192 SHA-256: f021f6c052b1b1e069065a28065c5cdf97425a13225c7c6c794cc7b3e9febf10
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious domains. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'ttraff.club' as a known malicious redirector. The document body, though heavily obfuscated, contains the same suspicious URL and other links that are part of a link farm, indicating a phishing or redirection attempt. The ML classifier also 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=gasland+discussion+question+answers In PDF document text
    • http://files.colinlangridge.com/uploads/1/3/1/4/131438180/luruxibidefebur_mupela_komujokit.pdfIn PDF document text
    • http://nanakujig.briannasmithonline.com/uploads/1/3/2/6/132682533/gogatufawukaz.pdfIn PDF document text
    • http://files.signsbylynn.com/uploads/1/3/2/8/132815220/dd337b.pdfIn PDF document text
    • http://files.whaleyhouse.com/uploads/1/3/1/4/131453395/kemafutitelumewil.pdfIn PDF document text
    • http://files.leaannlewis.net/uploads/1/3/1/6/131637136/darunodovalon-ninutipuj-xipawimadibo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3105/0915/files/hacker_typer_android_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8904/9238/files/jugubitapezasezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/ditoruwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/writing_task_2_ielts_model_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/5419/7910/files/applications_of_metal_carbonyls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/54356719052.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B10 5064 bytes
SHA-256: 50e91d7a6cf61a1b38b700932073a6747a14ccf574d50498a36db9981e6ce363
font_01_sfnt_off00005c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5D 9644 bytes
SHA-256: 9dcdd1aa6b99dec62af2a8ae3cbe9a7abd1d9d5c94ae088e60a7e0f7f235b7e0
font_02_sfnt_off00007d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D49 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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