Malicious PDF — malware analysis report

Static analysis result for SHA-256 0919e0372f5713f8…

MALICIOUS

PDF

42.4 KB Created: 2020-08-07 08:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14e82127d78710edeba9700fb3d70711 SHA-1: 72b0c6afd5e3629d07d1f4f488b0cca2b220d276 SHA-256: 0919e0372f5713f85b8b4816dae410cc9fbe84e64aaf9d73d22753bd7771f5bb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed to distribute other PDFs. The primary malicious URL, 'https://ttraff.cc/pify?keyword=hernia+diafragmatica+perros+pdf', is identified as a redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting a phishing or malware distribution attempt.

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=hernia+diafragmatica+perros+pdf In PDF document text
    • http://files.anjasinternationalworld.com/uploads/1/3/1/4/131408942/xiledezuxa-jigidamesa.pdfIn PDF document text
    • http://files.eibenteaching.com/uploads/1/3/1/6/131636819/fepabudarilabotar.pdfIn PDF document text
    • http://files.wisefishworld.com/uploads/1/3/2/7/132712214/bopid.pdfIn PDF document text
    • http://files.rebeccaocainlaw.com/uploads/1/3/0/8/130813646/73312de.pdfIn PDF document text
    • http://vuxebuw.katarzynasawicz.com/uploads/1/3/1/6/131637136/f96d39e85.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/73524244278.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7854/1727/files/xuzizozofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/kumunegexazovoburiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0614/7230/files/transition_words_to_start_a_paragraph.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9873/2696/files/movos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0344/4387/files/sukigovowapokusezexeses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8461/8653/files/23542926340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/alkyne_reactions_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7165/8389/files/mpsc_blank_answer_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7707/files/kenworth_8_bag_air_suspension_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1103/7591/files/86941190225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/30516618920.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A63 5192 bytes
SHA-256: 5acef7ac700b467454cda0107b8de041021827a2dd45ef606d7d8369200575e9
font_01_sfnt_off00006be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE9 10056 bytes
SHA-256: f0a2e76b1a8f000c7e0efcc2f0f2cc647ed32d8f8000539db6bffd69241cb6bf
font_02_sfnt_off00008e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E52 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333