Malicious PDF — malware analysis report

Static analysis result for SHA-256 da420ae8288c2ff9…

MALICIOUS

PDF

43.9 KB Created: 2020-08-12 00:39:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 17b1ddef8eed42b7813d50ffedf21df8 SHA-1: 052e1c42e3e62511b94faffe6b3dc1a3e5d333d3 SHA-256: da420ae8288c2ff9edfa71640acf7e0f7a76ad9572719261f6282ec2f0d2a7ea
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Peter Drucker managing oneself free pdf' and a URL that appears to be part of a link farm designed to attract search engine traffic. The primary malicious link redirects through ttraff.com, indicating a likely phishing or malware distribution attempt.

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=peter+drucker+managing+oneself+free+pdf In PDF document text
    • http://fofaga.calvarybaptistaltoona.com/uploads/1/3/0/7/130775195/noxovojimib.pdfIn PDF document text
    • http://zorepo.tiffanythetherapist.com/uploads/1/3/0/8/130874317/09e84613.pdfIn PDF document text
    • http://files.betsydcoval.com/uploads/1/3/2/6/132681342/388467.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/1/0437/6225/3978/files/english_lesson_plans_for_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5917/3790/files/62881930570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/local_anesthesia_book_malamed_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pawatofamilafal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/contamination_of_drinking_water.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81274949660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jedajuzosefowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/automobile_engineering_textbook_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8003/2160/files/depuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4899/files/bihar_stet_previous_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1304/4386/files/big_o_algorithm_complexity_cheat_sheet.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 1

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_off00006d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D45 5540 bytes
SHA-256: 472cfba2321a9f8ae166037fefddec64ea5f4d173a57dd6ac5eedf170c408d01
font_01_sfnt_off00008007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8007 10144 bytes
SHA-256: 7b1a361cd609773af39d12f8d34204ec5e683d9d1392c1b6d905b6893e2d4f98

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