Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c3ed6443c3d2500…

MALICIOUS

PDF

47.6 KB Created: 2020-08-23 00:07:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dfda938f4ac1744abc914120b6be67e1 SHA-1: 0b9df23437f101ed031cffde5c211d6a3bf848af SHA-256: 6c3ed6443c3d2500e80190354160c3642aa738698d5e33ef5a96219ca5801ab4
194 Risk Score

Malware Insights

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

The PDF contains multiple links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text and URLs that suggest a lure for an Android app, likely a phishing or scam attempt. The presence of numerous PDF links, many pointing to benign Shopify domains, suggests a link farm designed to obscure the malicious redirector.

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=video+er+app+for+android+2019 In PDF document text
    • http://vuwuvim.oakfinancial.org/uploads/1/3/1/4/131438641/d6ab88f57ee7.pdfIn PDF document text
    • http://files.bestgambling.co.uk/uploads/1/3/0/7/130738701/firagalitapat.pdfIn PDF document text
    • http://nupeme.clearlyjoewhite.com/uploads/1/3/1/4/131455069/jumuvemogoj-wuwuvebozuru-bejazetobomup.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/1/0428/2348/3548/files/descriptive_writing_worksheets_grade_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/83061199999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50537202024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/94180919217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/9174/6977/files/graphics_card_games_for_pc_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/wuriwedamixarisijuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9560/3880/files/exercises_for_cerebral_palsy_child.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9455/6320/files/botokituxeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0011/8943/files/antropologia_social_y_cultural.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/25336942260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2436/7266/files/ganesarubafatewiduxaturaz.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 2

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_off00006ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ECC 4980 bytes
SHA-256: 6f4df8bc05e2032cb65a2c18deab709817fcc40e2f93fac913992115734ee13a
font_01_sfnt_off00007fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBF 10364 bytes
SHA-256: 53ebd007fd09b7e1a6adc104f55d15ceb5308a9255e794740521976450534535
font_02_sfnt_off0000a339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA339 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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