Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5087b49b5df415…

MALICIOUS

PDF

64.6 KB Created: 2020-08-12 02:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f153193c7156ab3776cdd8e37c65926f SHA-1: c2f9511cf73cf421fee4c70776f84bc3da5b4d1b SHA-256: 6d5087b49b5df41586ef2fbc8c5e08277c02d8a498fcedefa392d829077036f8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a malicious domain, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text and URLs suggesting a lure for downloading a file, likely a malicious payload. 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.com/pify?keyword=calendario+serie+b+2020+19+pdf In PDF document text
    • http://files.retreatatprairiewind.com/uploads/1/3/1/3/131379118/lujos-fanarejabu-mudiva-lizogij.pdfIn PDF document text
    • http://files.lawyercma.com/uploads/1/3/0/7/130739212/6419860.pdfIn PDF document text
    • http://files.kismetkidsyoga.com/uploads/1/3/1/4/131437074/4230936.pdfIn PDF document text
    • http://files.marinasole.com/uploads/1/3/1/3/131379111/gofawobobonos_faladixetiboli_xutiwudumeju.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/1/0437/2329/2822/files/89938111422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/jezubufak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2589/0469/files/70256438609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lenibokufilitixesokan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3849/8206/files/jazipesemolib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7559/9524/files/bevid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3427/2163/files/levimedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8080/0674/files/java_square_root.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6959/1967/files/vizimaletuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/1078/8261/files/price_effect_substitution_effect_income_effect.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/51691506143.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00009a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A12 5560 bytes
SHA-256: 0e5cebea7be8289bd2061b5041fbabb0e9745e6df5aef5b54c94ddef56a4f4d3
font_01_sfnt_off0000acff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACFF 16408 bytes
SHA-256: 6a51d5c3909721ead40cb2d3d3f378fec48c5379889166c1097f6c301d5e08dd
font_02_sfnt_off0000de7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7D 16064 bytes
SHA-256: 2ab85f5f084fe11b94e74309fffab84832e8b82947a8819311f607ca1406fb96

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