Malicious PDF — malware analysis report

Static analysis result for SHA-256 af9d3a070557aa6a…

MALICIOUS

PDF

66.5 KB Created: 2020-08-08 18:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ae7be2f896a8f3519d68372834a49a1 SHA-1: 37fd1b5398cfc4f4ea17f421cb2e86f18438513c SHA-256: af9d3a070557aa6ae03e6b52733077bbbccf644a1390aaad93e61621047cd65e
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'water jet machining pdf free download' and a URL pointing to a redirector. This suggests the document is designed to trick users into clicking malicious links under the guise of providing a free download, likely leading to further malware or phishing attempts.

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=water+jet+machining+pdf+free+download In PDF document text
    • http://patebadu.neuroimmunepn.org/uploads/1/3/1/4/131454012/zotogewotu.pdfIn PDF document text
    • http://files.biologywithradjewski.com/uploads/1/3/2/6/132681891/ac624ad9.pdfIn PDF document text
    • http://files.mikewmorgan.com/uploads/1/3/0/7/130776054/4831202.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/1/0429/0327/3628/files/gabazalubemuminulig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7751/0055/files/ascent_book_company_biology_volume_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2200/0029/files/xodulafaborikutavogolisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3197/0460/files/sezodudamobaretitop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2866/6785/files/vudutojepudalejigeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3101/0199/files/11664484356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5944/3862/files/eel_3123_lab_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/safezewuruwoduvuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9140/9558/files/87367059578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/dibozivogexokova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3107/5743/files/ffxiv_mining_leveling_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b84c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB84C 5360 bytes
SHA-256: 1d3cfbece0e60e8b8e4bdee4d5c7f1d1bc39553d499b84d78d55f8350be753d5
font_01_sfnt_off0000ca82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA82 10652 bytes
SHA-256: 5159b7622b5c5d13159d68280ca848dcd7924f84e9cdbf017d86e5c75cddb5ae
font_02_sfnt_off0000eedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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