Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b9fdecef08ca8d9…

MALICIOUS

PDF

42.8 KB Created: 2020-08-24 13:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 044f411f53bb5dedc30d659a45360371 SHA-1: 649043558d0552755d860a2f9c00c61c38951e14 SHA-256: 1b9fdecef08ca8d9597b0b09c0ec4628e47f596cce81c480f06c33bb0a40d521
194 Risk Score

Malware Insights

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

The PDF document contains a significant number of embedded links, with a critical heuristic firing indicating it's a malicious redirector. One of the primary links, 'https://ttraff.cc/pify?keyword=agroecology+fao+pdf', is identified as a malicious redirector. Another embedded URL, 'http://guwifubow.gsuitegurus.com/uploads/1/3/2/3/132302782/a287509.pdf', is also present. The document body contains garbled text but includes the malicious redirector URL, suggesting a lure to external malicious 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.cc/pify?keyword=agroecology+fao+pdf In PDF document text
    • http://guwifubow.gsuitegurus.com/uploads/1/3/2/3/132302782/a287509.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/1/0433/3142/0319/files/79357907344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/expense_report_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/59485921090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/diagnosis_of_bacterial_diseases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/7773/0209/files/audio_songs_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6705/files/79790527484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3269/6216/files/pudobasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2471/8746/files/vitopetedijojidaraziximoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/aaos_back_conditioning_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5118/files/lonuwojutudaminib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0608/2454/files/busch_gardens_tampa_park_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/22214217636.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 1

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_off00006b8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B8D 5236 bytes
SHA-256: 1cb450d60f93508b980a84305a544156abfc1e3b552019e7afa3b4fd32bdfd74
font_01_sfnt_off00007d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D6C 9776 bytes
SHA-256: c2c75c1febda13862ee5f577eb2690d72165769e5cd6a7157e0a60b06427c0d4

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