Malicious PDF — malware analysis report

Static analysis result for SHA-256 715bd78142fd6b0e…

MALICIOUS

PDF

50.0 KB Created: 2020-08-26 07:20:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 000f1e3348b3fe3c287af19eb4365e01 SHA-1: 7ba31939f1cb14f2e9a0600bb35b4e36c6a33bfe SHA-256: 715bd78142fd6b0e369cb1180a35e141adede179ceb77758bb1cf8718f329099
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that is known to host malicious content. The document body and heuristics indicate a lure for free downloads, likely leading to a phishing or malware download site. The ML classifier strongly supports the malicious verdict.

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=hansaplast+insect+bite+patch In PDF document text
    • http://files.willsphotographypa.com/uploads/1/3/0/7/130739654/bujixojabaxosa-vevawe-lomikazixibet-pamos.pdfIn PDF document text
    • http://files.francesmcmahonward.net/uploads/1/3/0/7/130739828/932577.pdfIn PDF document text
    • http://files.yellowbirdnestweddin.com/uploads/1/3/1/4/131407968/3b584f27f.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/1/0434/3896/4903/files/dark_eldar_codex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/artificial_intelligence_in_pharmacy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0433/8074/files/tonesoxizonex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5644/7136/files/nucleophilic_substitution_reaction_of_benzene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/lufupuvolupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/welilavuruwad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/satoshi_mines_bot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0849/1673/files/milazagadivasejufubexewig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0967/9265/files/before_and_after_numbers_worksheet_for_kindergarten.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F4 5024 bytes
SHA-256: ec045ba662f2c3382c7204da947374fb8f95e6ccab0b7d7a8a4fd975b43a9956
font_01_sfnt_off000075f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F0 2092 bytes
SHA-256: 6e5de5c6bcb7fdd8c5ca0d25823a8f80e6c764803c1b732dbc9c425a5c0f8ea5
font_02_sfnt_off00007f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F96 11100 bytes
SHA-256: 92ce9edce825e34a59b319554ad3d2a9aa8f3b1fb8be3cdba4e05425f2274bd4
font_03_sfnt_off0000a5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5A9 16144 bytes
SHA-256: 18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b