Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f36f3356b24753f…

MALICIOUS

PDF

230.8 KB Created: 2020-08-06 06:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6f74ca3926050a0c7b12d0203800632 SHA-1: 0bd5b1507aaa2833870a38292873a9a08112a5c0 SHA-256: 8f36f3356b24753f96a0a8a9de1da6aed6a343c0092965745edad2fc811b080b
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to a known malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL which is likely intended to trick the user into downloading further malicious content. The ML classifier also strongly suggests maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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=mueller+report+redacted+pdf In PDF document text
    • http://files.emilycavanaghauthor.com/uploads/1/3/2/6/132680808/6793363.pdfIn PDF document text
    • http://files.gabrielledeveaux.com/uploads/1/3/1/4/131407980/masum.pdfIn PDF document text
    • http://files.moanxiety.com/uploads/1/3/1/4/131453588/dedonepepedewi_fiwikajozasav_dazodijo_worebogum.pdfIn PDF document text
    • http://files.angelfirevet.com/uploads/1/3/0/7/130776590/b97232acb9.pdfIn PDF document text
    • http://vogeta.utezahnviolinmaker.com/uploads/1/3/0/9/130969551/ladula-kulanikezijurad-jugaxegado.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/1/0434/0776/9750/files/forekukojebebowekepimimeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8587/9713/files/star_wars_armada_cards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8801/0659/files/dunadunere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/wisiwovukogelupobarawap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/mujumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7265/0397/files/kanojupoxuvokonob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1311/1961/files/49272284060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1136/5288/files/how_to_install_selenium_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5995/3312/files/apocrifos_del_antiguo_testamento_tomo_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/xopadidavixab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2204/7637/files/revised_atlanta_classification_for_acute_pancreatitis_a_pictorial_essay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2717/6343/files/rewrite_exercises_b1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0051/1138/files/xofonowitabezopop.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_off00034f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34F02 4976 bytes
SHA-256: 0947f32e7d6512c8d665ef5e97851555bb2cde3eee9e5e83f53294af011a6dd3
font_01_sfnt_off0003600f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3600F 13956 bytes
SHA-256: bbf05485491aa4c960f0a91edc63bea2042d8cfd29cc9859fd086dc14696423b

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