Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a2aea9650122c93…

MALICIOUS

PDF

36.7 KB Created: 2020-08-25 08:04:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b62f94b0be389cad4dfc3f5d495e0b6a SHA-1: 8ab640be0cdcf31f26556a9a61db9a3fd3350d51 SHA-256: 5a2aea9650122c934264563d144c501a6de0afc9b360205dfb9ccbae71049e4f
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, specifically pointing to a redirector URL that masquerades as a free font download. The embedded URLs and the document body text reinforce this lure, aiming to trick users into clicking through to potentially harmful content. While no scripts were directly extracted, the PDF structure and linked URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=lucida+calligraphy+font+family+free In PDF document text
    • http://bewina.tom-buckland.com/uploads/1/3/1/6/131607163/8584277.pdfIn PDF document text
    • http://files.bamboobabyboutique.com/uploads/1/3/1/3/131398010/6156352.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/1/0435/8098/1403/files/arduino_programing_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/auditoria_administrativa_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6676/0095/files/losamezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5280/0920/files/wupupilumos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/35449145295.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3471/7858/files/lumuwurojege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/pokemon_showdown_teams_ou.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4095/5803/files/block_abdominal_ultrasound_step_by_step.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/federal_bank_aptitude_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/6518/9019/files/ruvonabirole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/dokowimawexoduwen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9649/7573/files/27827142813.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FFB 5432 bytes
SHA-256: db88f20e010da22eea017f3432e88a4732e4bb62d50f660602d6d8e8fcfcc5c6
font_01_sfnt_off00006253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6253 10536 bytes
SHA-256: e95de8c95b531279560dc444dae7c8a874da14443471992d3b0618829df6d10a

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