Malicious PDF — malware analysis report

Static analysis result for SHA-256 2935fd5b3354b581…

MALICIOUS

PDF

38.9 KB Created: 2020-08-10 15:21:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b50dde3c50a2309e2c675f7ca6667249 SHA-1: 9d88badc140b85eb4a7ee862c643190c38adcd91 SHA-256: 2935fd5b3354b5812bcbdf599f7d1097b8219a47dd76fbad17818d2f30414f8a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'asme b16 34 pdf free download' and the malicious URL, suggesting a lure for users seeking technical documents. The presence of a malicious redirector indicates an attempt to lead the user to a site that likely hosts further malicious content or exploits.

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=asme+b16+34+pdf+free+download In PDF document text
    • http://files.westsideuta.org/uploads/1/3/0/9/130969809/biroxagepakit_lirifiviwereg_luxupatisanojag.pdfIn PDF document text
    • http://rilizu.balciunaslab.com/uploads/1/3/0/7/130776791/fetejoxubov-xawilexalu-baximuvejiwom-nezokijaf.pdfIn PDF document text
    • http://files.g7evenphotography.com/uploads/1/3/1/6/131606874/4510413.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/1/0437/8509/3281/files/materiay_angielski_dla_dzieci.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/the_barkays_soul_finger.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9339/2536/files/spring_boot_tutorial_javatpoint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2154/1271/files/69966266304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/kilijibedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8741/3923/files/47508013549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2522/6152/files/jabajatovuwujorewipajore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6761/2063/files/15288019699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/dorefetavemogad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9899/6889/files/49205555572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.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_off00004d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D30 5528 bytes
SHA-256: 85766b8fbfea69731633d093026750b39e8306c909d4fe71b7d541f3d0cea064
font_01_sfnt_off00005fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDA 9760 bytes
SHA-256: 506ed82c7e2e27f66e87984eddc0f75e5710ad7dc773728980629e6eed15e9e2
font_02_sfnt_off000080fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FE 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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