Malicious PDF — malware analysis report

Static analysis result for SHA-256 e699cf3b23e38ae3…

MALICIOUS

PDF

38.5 KB Created: 2020-08-14 16:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83808c7af8c00cb633c036a9f10d5bce SHA-1: ff26591a6d776ef3c007bf24169e48922cae03e9 SHA-256: e699cf3b23e38ae376964cfe4143ee2072598679976f6f563a86dd0af98318dd
194 Risk Score

Malware Insights

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

The PDF file exhibits malicious behavior through a high density of embedded links, identified by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. One of the primary links, 'https://ttraff.com/pify?keyword=anyong+tubig+at+anyong+lupa+worksheet', points to a known malicious redirector. The document body, though heavily obfuscated, contains this URL and numerous other links to external PDF files, suggesting a link farm designed to distribute malicious content or conduct phishing attacks.

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=anyong+tubig+at+anyong+lupa+worksheet In PDF document text
    • http://bumuteso.mhpps.org/uploads/1/3/1/4/131453540/78552.pdfIn PDF document text
    • http://files.audio-activity.com/uploads/1/3/0/7/130775286/9f9cb8.pdfIn PDF document text
    • http://sasugun.natural-wanders.com/uploads/1/3/1/3/131398017/1994964.pdfIn PDF document text
    • http://kesedep.trinityfaithchurchtfc.org/uploads/1/3/1/3/131378950/jazegulagirexera.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/1/0434/8451/2406/files/vodavumakifuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6592/3992/files/film_innocent_witness_drakorindo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7443/5737/files/ielts_speaking_part_2_questions_and_answers_top_50.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1254/5950/files/dilasuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2318/7616/files/cable_damage_incident_report_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/22717545610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3526/1085/files/jigifizajedunepigef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/holt_california_physical_science_textbook_8th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/xexemegedogumus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/zabuxojufexope.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 8

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_off00004fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB7 5468 bytes
SHA-256: 4dabbaa923fa1c65bf36e357b8a3f54b7fcbcb9bdd24310b33d9bf6ea00d98f9
font_01_sfnt_off00006255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6255 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off00006ae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE2 9924 bytes
SHA-256: f7b4abebd4f5e29449273b53829e5608fad79d7f9c9050c3807879f3c4793b81

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