Malicious PDF — malware analysis report

Static analysis result for SHA-256 13bae4624414e7a2…

MALICIOUS

PDF

44.7 KB Created: 2020-08-10 12:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89b04a7e51ec696c3391a2ca1e1863c3 SHA-1: e3b259ad9cbd5bd35e34b3a91c2deabb931b3dcd SHA-256: 13bae4624414e7a2a5d249c870749e9783a5095949ed07b3273ab5be8a7c6ec8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to 'biohazard waste management pdf' and the malicious URL. This suggests a phishing or scam attempt to redirect users to potentially harmful 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.ru/pify?keyword=biohazard+waste+management+pdf In PDF document text
    • http://menum.flowingwellsgirlsbasketball.com/uploads/1/3/0/9/130969723/1977695.pdfIn PDF document text
    • http://files.nkcecc.com/uploads/1/3/0/9/130969003/kiziwekovureniw.pdfIn PDF document text
    • http://files.rotaryseymour.org/uploads/1/3/1/4/131437636/52e18.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/1/0437/8794/4094/files/josaledag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/2367155554.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/9773135178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1826/0377/files/mkv_to_mp4_converter_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/pifemarutelobom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8212/8291/files/badoo_premium_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/7996/1495/files/32348890310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6923/5619/files/nidegalefidun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1811/7543/files/63525037972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/16939571781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/wekudulapokipita.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 5

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_off00006364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6364 5400 bytes
SHA-256: 9a9447a68c841a80b364ed428db15da127240eab11d55f0bc35bffc325122390
font_01_sfnt_off000075b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B7 10068 bytes
SHA-256: 8c28247f26e9e8a22fec729d1a507bfcb813b6aa53eca261e5e176e1b08a3a70
font_02_sfnt_off0000981b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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