Malicious PDF — malware analysis report

Static analysis result for SHA-256 73fb17cf268a8d50…

MALICIOUS

PDF

41.9 KB Created: 2020-08-22 12:36:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c05e4e87d89953fe10598e8545265f6e SHA-1: 9631972caafda91693b17c47e7ce1d6862cd6b68 SHA-256: 73fb17cf268a8d50172c6ae98eaffbadafb5109d6dacdb76239f95b5a67bf1e9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a known malicious infrastructure, masquerading as a 'secure boot error android' alert. This suggests a phishing or scam attempt, likely to trick users into visiting a compromised site. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to drive traffic to malicious content.

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=secure+boot+error+android In PDF document text
    • http://kidifolem.coastguardmaraetai.org/uploads/1/3/2/6/132681670/zinepigotofi_rusalu_raged_nubedota.pdfIn PDF document text
    • http://files.ilovesmiley.com/uploads/1/3/1/4/131453213/4128176.pdfIn PDF document text
    • http://zarikit.wicknscents.com/uploads/1/3/2/8/132815806/pafepimamuwoxi.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/1/0433/1231/6584/files/zolpidem_monograph.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/table_html_template_css.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/336624051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3717/7494/files/vaxupezajoxolavosafaful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/rutegososojozelekiwumori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2449/3213/files/best_cheap_android_phone_uk_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5920/8604/files/wireless_communications_principles_and_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6489/3345/files/subtraction_with_regrouping_worksheets_for_grade_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5833/7694/files/glossary_of_law_terms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/math_expressions_homework_book_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3465/4358/files/editable_debit_card_template.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 4

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_off0000675a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x675A 4964 bytes
SHA-256: 951377cb7ac77c0de62b61d6a8e717fde8cf32c07672addb55a75382cc000025
font_01_sfnt_off0000783c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x783C 9996 bytes
SHA-256: 6264de6a8e637678ea116bc379e9ccf7ddd702fa5741467c03c4d748be6c65c9

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