Malicious PDF — malware analysis report

Static analysis result for SHA-256 a63ae54dbc79d674…

MALICIOUS

PDF

39.8 KB Created: 2020-08-18 15:18:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8fa0a2f51e3908b71e28efe195622867 SHA-1: c52d3a248cffc52111dc6860c85ee4b4b6e33b2d SHA-256: a63ae54dbc79d67403f09d2044b65dd50b749542595b2e30232703dc75289a3f
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to email signatures and includes the malicious URL. The heuristic firings indicate the PDF is acting as a redirector and a link farm, designed to send users to external, potentially harmful, 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=best+email+signature+templates In PDF document text
    • http://files.pokeberryexchange.com/uploads/1/3/1/4/131482952/basukifovopopozol.pdfIn PDF document text
    • http://jefik.bethelbiblecamp.org/uploads/1/3/0/8/130813528/8ce6353d76.pdfIn PDF document text
    • http://files.thewaveindustries.com/uploads/1/3/1/4/131413837/a1b902b2.pdfIn PDF document text
    • http://files.leaderproject.com/uploads/1/3/0/7/130740517/riwamuradovabud-jepusikabo-xagelapavapa.pdfIn PDF document text
    • http://files.printyprintyprincess.com/uploads/1/3/1/4/131437873/7186118.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/1/0439/0433/6027/files/best_calligraphy_fonts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7091/4717/files/mafibuwurix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/fish_counts_southern_california.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2562/8316/files/befufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/arere_avala_naguvu_audio_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5365/2895/files/water_supply_and_sanitary_engineering_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5058/2684/files/el_libro_rojo_carl_jung_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8508/6374/files/harry_potter_and_the_goblet_of_fire_book_bloomsbury.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2381/9175/files/88152872673.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_off00005f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F44 5188 bytes
SHA-256: 220791029597d48542277866ef34f8620f2e9b311967d949f5a3fd91a73132d7
font_01_sfnt_off000070cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70CD 9972 bytes
SHA-256: d0e9bfab1c8ebb38d100d7ced6cf885f21763464e24d24b15a0f733d76c94b3a

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