Malicious PDF — malware analysis report

Static analysis result for SHA-256 5095a67c050f0028…

MALICIOUS

PDF

66.9 KB Created: 2020-08-24 15:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f155fc639c985a3672b2755554d11683 SHA-1: ab2b0c4a3d8641b29026915485292f3f85d21fcc SHA-256: 5095a67c050f0028120d3fe5837da18f0aea1ec1f93b3fd5a21703b5d5645a71
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.cc/pify?keyword=ontology+definition+pdf', points to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated but contains the same URL, suggesting a lure to a malicious site.

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=ontology+definition+pdf In PDF document text
    • http://kibujage.andrewmoschetti.com/uploads/1/3/0/8/130814328/sonimitodesuzavo.pdfIn PDF document text
    • http://files.trails4tailsfest.org/uploads/1/3/1/0/131070918/wululi.pdfIn PDF document text
    • http://kabegafod.northvicgps.com/uploads/1/3/0/7/130740117/nuwuz.pdfIn PDF document text
    • http://files.jayadeviarts.com/uploads/1/3/1/8/131856713/4f2a73c.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/1/0432/5156/4707/files/adobe_lightroom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7279/0432/files/52759163675.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1197/3026/files/comparing_fractions_worksheet_grade_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8438/1337/files/poenulus_plauto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7958/2374/files/zifik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1000/6940/files/logesetukafefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/99594757674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9597/3283/files/al_arabiyyah_bayna_yadayk_book_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7901/5327/files/d_d_purple_dragon_knight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/acharya_prashant_books_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0191/2224/files/79001799352.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_off0000c292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC292 4856 bytes
SHA-256: 58abbb5f8f08a4c1d499694b864c0963a1a259b0e31f9e50dd887bd4f507f055
font_01_sfnt_off0000d33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33B 13576 bytes
SHA-256: 34c915e6908d30cf803e194d96ccc83d218246f19a028c073683b245a9e361a0

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