Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c469a42023c92cc…

MALICIOUS

PDF

61.6 KB Created: 2020-08-12 05:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d7a172e361d5f568ae774df28a016fe8 SHA-1: ed1ebe17d7fdb1f123e9765a9a65269c63d4a797 SHA-256: 7c469a42023c92cc57a0a281b3a046af6d7db2fed92ae0b4fdf6e08a1cc61e4f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a technical manual, likely intended to trick users into clicking the malicious link. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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.com/pify?keyword=ccna+voice+lab+manual+brent+sieling+pdf In PDF document text
    • http://files.gsdmc.org/uploads/1/3/2/6/132695216/zokes.pdfIn PDF document text
    • http://files.petiakostadinova.net/uploads/1/3/1/6/131606407/fokazadugot_bupowogetum_givules_toxelebafatiju.pdfIn PDF document text
    • http://bufuk.sevenjewelsoflife.com/uploads/1/3/1/4/131437736/7095b443c.pdfIn PDF document text
    • http://files.jaclynloween.com/uploads/1/3/0/9/130968961/81d80c.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/1/0432/3698/2943/files/kapovugeretomogeronex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2454/0071/files/cd4047_datasheet_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1256/1819/files/89447967523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5686/files/90756090898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8839/files/lemij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/iwcf_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7332/0600/files/44922945484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4496/9367/files/48268345573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1753/4629/files/berotoku.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 3

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_off0000a6e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6E0 5580 bytes
SHA-256: a049ab616d7b3560c6fb9c3f8cf2aee06a411c44b08c5b2d5d134af69d3fe08e
font_01_sfnt_off0000b9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9B6 15360 bytes
SHA-256: 8c03b716107aeb0b9ff4b35e5d16911964bc86ff479438895994e678c11f2367

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