Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b8c9bf43c07a6c7…

MALICIOUS

PDF

46.6 KB Created: 2020-08-07 02:54:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a437dbf9d7de48e33dba3e60f719c14 SHA-1: b21d844d2ce804910c6403621bbee1762fe7d8f2 SHA-256: 5b8c9bf43c07a6c7ed3b96022ef26f47c60485ddf7daa98d5af56e09f0d980ce
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure users into clicking it. The ML classifier also strongly indicated maliciousness.

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=telur+ascaris+lumbricoides+pdf In PDF document text
    • http://files.jeremymahood.com/uploads/1/3/0/7/130739163/6003871.pdfIn PDF document text
    • http://xawezewo.creative-soul-coaching.com/uploads/1/3/1/4/131408027/7502525.pdfIn PDF document text
    • http://bedozo.rachaeldzikonski.com/uploads/1/3/1/4/131453133/popoxes_bapafolasugupa_kebati.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/1/0434/8208/7576/files/sufuvutaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9900/4831/files/microelectronic_circuits_7th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3391/0681/files/cool_math_jacksmith.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/26696981208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4089/7174/files/89303132212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/bumubajuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3696/5026/files/nifuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/84430553064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6399/1717/files/zasitekepoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1538/6789/files/57153780338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0023/3110/files/77570559174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/gezodifoposodegefot.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA4 5084 bytes
SHA-256: 5dd5460ea23300640d2ed20505f0e8fa66d10ec962b79612bc23b6941f2c7955
font_01_sfnt_off00007cdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDB 10116 bytes
SHA-256: 520fe7d715c4f44920d5c5ab259da9398b98054fd361179f10eee07f3481d50a
font_02_sfnt_off00009f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F79 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

Open this report in the interactive analyzer, or submit your own file for analysis.