Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b114fa7f0e3a603…

MALICIOUS

PDF

37.6 KB Created: 2020-08-23 23:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a379bb9c603a95a3e818e7777edd574 SHA-1: 028310958a2d02154c91fc77b3e5b6716000df44 SHA-256: 8b114fa7f0e3a6032360fa8c306327d57d060ba6cc9a5f4de565642dbdc647af
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains multiple embedded URLs, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Blackboard collaborate launcher pc' and includes the malicious URL. This suggests a social engineering attempt to trick the user into downloading or executing a payload by clicking the link, which leads to the 'ttraff.com' redirector.

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=blackboard+collaborate+launcher++pc In PDF document text
    • http://xegenikam.cathycarterartist.com/uploads/1/3/0/7/130775565/e747448a7076.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/1/0435/0899/0116/files/vopalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/zedaxejasidavivuvezob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7607/3125/files/how_to_convert_arabic_to_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/xufowogixumoxofuxer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/fuduxupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3671/0824/files/76693154907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1197/8902/files/buku_belajar_photoshop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3337/9484/files/goxujewipi.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 6

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_off000056ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56AE 5236 bytes
SHA-256: a06b9fc6d39e1424a9a7899909fee9623adc1d33d1a1c6e4650a62d5e3222f90
font_01_sfnt_off00006863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6863 9880 bytes
SHA-256: cb2168dfed0236ff1b5e23da66cd993b0c1200b4abc4f475087e1092a8c5b00b

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