Malicious PDF — malware analysis report

Static analysis result for SHA-256 4747a21750847e94…

MALICIOUS

PDF

41.9 KB Created: 2020-08-05 02:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fd0252280751d4d83e6d83b5ba543046 SHA-1: faf128afb3724afcbb8a6ac03f1dfc6b4ea49509 SHA-256: 4747a21750847e9487629521dd122d24decc42bd54b3d1e541fe509668a3ea6a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary URL pointing to a known malicious redirector. The heuristic firings indicate this PDF is a malicious redirector and part of a link farm, likely designed to lure users to malicious sites. The ML classifier strongly supports the malicious nature of this document. No scripts were extracted, but the extensive use of external links suggests a delivery mechanism for further 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.ru/pify?keyword=calendar+2020+printable+pdf+with+holidays In PDF document text
    • http://files.ladegaardlaw.com/uploads/1/3/0/7/130739625/4958035.pdfIn PDF document text
    • http://files.embracethebeauty.net/uploads/1/3/0/7/130775583/fimudile.pdfIn PDF document text
    • http://files.birdsonawireblog.com/uploads/1/3/1/1/131164016/naxadixarum.pdfIn PDF document text
    • http://files.donnablifecoach.com/uploads/1/3/1/3/131381363/virepaguwez.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/1/0440/6640/6550/files/17179300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/ryobi_electric_trimmers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1042/3960/files/tibofegogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8973/1479/files/pugafijeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54341666742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/84162788048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/51105603077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2849/6036/files/wobelalapevoxusenagepima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/pasaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/xasoxaxarawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/lord_i_m_available_to_you_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3612/8933/files/tefonixelelototesumediz.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 5

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_off00006483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6483 5644 bytes
SHA-256: 7fc0c9d482e87da52ce1f2695ba464c81d7d7e33068fc58c2a8488a233ee2282
font_01_sfnt_off000077b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77B3 10200 bytes
SHA-256: badbe5fcacd7aaadfad2479d4ee3d8856e02626e9d191eece65778f73106aa18

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