Malicious PDF — malware analysis report

Static analysis result for SHA-256 c58ca5c87c16fead…

MALICIOUS

PDF

40.2 KB Created: 2020-08-06 19:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3eb198e534feed0adb09e3f4add79b5f SHA-1: b3ada9f0465dd5e810a45baa5e709f9776ad57ce SHA-256: c58ca5c87c16feadee62155eb38486771f52de390c027a5377e4fd1ad6b3fe69
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains text related to a project report and includes the malicious redirector URL. This suggests the document is designed to trick the user into visiting the redirector, likely leading to 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.cc/pify?keyword=acknowledgement+for+project+report+in+college+pdf In PDF document text
    • http://files.jrnewsphotography.net/uploads/1/3/0/8/130813314/fepuvafutorilo.pdfIn PDF document text
    • http://files.portergenie.com/uploads/1/3/2/6/132682723/3738988.pdfIn PDF document text
    • http://files.morningslight.com.au/uploads/1/3/1/1/131164009/viganekemad_sedodipir.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/1/0432/2417/0659/files/ars_goetia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/bogemozusixurebebenin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7177/3601/files/guvunurenolamudiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/binawanoxolaluvili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/47303100112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3676/9447/files/digital_dash_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8855/9782/files/bihar_si_question_paper_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2324/4191/files/nisevezuginaroxunajonad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/46282013621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5916/7900/files/69767941891.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 4

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_off000060a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 5308 bytes
SHA-256: a5ad8ed68555df565f6b5b29d048815008238481a8f2d36bb87b0428e8e933a7
font_01_sfnt_off000072c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C5 9944 bytes
SHA-256: 756fb4c9a7762d889d94d621b74d37866256d6c417700abc7e5314ae22791044

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