Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bf3a945022bbf1…

MALICIOUS

PDF

34.6 KB Created: 2020-08-12 12:47:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f451c38f24336177bb269588f8c6c8d1 SHA-1: 556d3421d6e620ec98c2482032d93bd1164c9c04 SHA-256: 80bf3a945022bbf18345e26998dfa8593a3421256ed58ac7f259bd553cbbc67d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, specifically for linking to known malicious redirector infrastructure and for containing a large number of external PDF links, suggesting an SEO spam or phishing campaign. The embedded URLs, particularly the one pointing to 'ttraff.com', are designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains references to these URLs, reinforcing the malicious intent.

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=invertebrate+zoology+anderson+pdf In PDF document text
    • http://files.columbiadentcenter.com/uploads/1/3/0/9/130969910/jubegonakajij-desagomabof-sateno-pikilolot.pdfIn PDF document text
    • http://files.nerdgonerogue.org/uploads/1/3/2/7/132740399/13171.pdfIn PDF document text
    • http://files.parklandpacificdental.com/uploads/1/3/1/4/131408537/rigedewaxek-dunodovopoka-radit.pdfIn PDF document text
    • http://files.jhepta.org/uploads/1/3/0/7/130739693/kakatovepawoxer.pdfIn PDF document text
    • http://files.elkhornvalleyhrc.com/uploads/1/3/0/7/130775466/f328c8.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/1/0432/2977/3981/files/domawiwutiwefevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/altistart_48_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3183/8368/files/daddy_yankee_limbo_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9512/8216/files/mavelawipobunoduxesur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/0749/5591/files/62747994733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65022979336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/catalogo_placche_axolute_bticino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/66136176393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/bacterial_biocontrol_agents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/5th_grade_math_volume_worksheets.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000487b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x487B 5500 bytes
SHA-256: 3e0de6a025a762b8935cec8942b186416bd9984320b7e9f851195e1f797c22ae
font_01_sfnt_off00005b47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B47 10072 bytes
SHA-256: 580c28655a8e60e69f34c6a3f2b05f720fc380be137a1aca15d9a1fc58d4b823

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