Malicious PDF — malware analysis report

Static analysis result for SHA-256 50322cf0cb48bf0e…

MALICIOUS

PDF

40.6 KB Created: 2020-08-24 05:40:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9bf0b835cbfa0ec25fd816861d2f884 SHA-1: a12fe6704c88ba4a91c99efe5918dbe1f073ae56 SHA-256: 50322cf0cb48bf0e0c8c73ab006cb40fb550b8b6133d5192d8705ebf42183e0d
194 Risk Score

Malware Insights

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

This PDF file contains a high number of embedded links, many of which point to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Video do instagram ios'. The primary malicious activity observed is the redirection to a potentially harmful URL, likely for phishing or malware distribution.

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=video+do+instagram+ios In PDF document text
    • http://files.valleyfloors.com/uploads/1/3/1/1/131164023/kixez_gojanuta.pdfIn PDF document text
    • http://files.naughtybody.net/uploads/1/3/2/7/132712282/5080850.pdfIn PDF document text
    • http://files.lightsoutlet.net/uploads/1/3/1/6/131606092/danalub-nowevewunumuz-pigebesibebo.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/1/0428/2908/6887/files/18760651016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6368/0929/files/definition_of_validity_in_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7228/9942/files/likis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9339/2536/files/marubuvimupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/48903686451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/entrepreneurship_and_innovation_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3873/4496/files/39162300660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/jijenadibileruxotavovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5804/4826/files/29662147980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2892/9960/files/97410562297.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_off00006235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6235 5080 bytes
SHA-256: e95ffbf052715243357f43bfc1ee974a2770d74761275efb75e37684f07bb312
font_01_sfnt_off00007366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7366 10096 bytes
SHA-256: 27cc22526c295d2a85cba7b0d12691ad15648de154f7c0d31cd9b109bb2e7f46

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