Malicious PDF — malware analysis report

Static analysis result for SHA-256 a93a7602fe84735b…

MALICIOUS

PDF

47.1 KB Created: 2020-08-21 15:07:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb3ef7764086b574bd39e9e975b2ae0a SHA-1: 94538447153c73e2afc36f8a57a9a9fa052354ac SHA-256: a93a7602fe84735b0d41afc691c4c42b9eee738c9f57f78a706c40ab167e18c4
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though partially corrupted, includes the same redirector URL, suggesting the primary intent is to lure the user to a malicious site via this link. No scripts were extracted from this sample.

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=bending+emt+conduit+pdf In PDF document text
    • http://files.hk.wall-in.com/uploads/1/3/0/7/130775357/2820215.pdfIn PDF document text
    • http://files.architecturaldesigner.world/uploads/1/3/1/3/131381901/806cb63b8820fe4.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/1/0438/2602/0509/files/28113282540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1015/4908/files/12116563334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1942/6197/files/gaming_discord_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/css_slide_down.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/3403/5622/files/blank_form_nafta_certificate_of_origin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3282/1412/files/31699647770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/zowemelusekibonurizuxigul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3536/8346/files/53816149626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5503/7093/files/47383137344.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 4

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_off00006e48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E48 4888 bytes
SHA-256: 7234e29cdf13eda1ec07f7d3e7319b83b3503e1f49f7d0e0305a7ff8dce98be5
font_01_sfnt_off00007edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDD 10260 bytes
SHA-256: 7cbdcfa31eda1b9fe144564cc7121cda41bd25c0239f77053d415393b212ecf4
font_02_sfnt_off0000a1fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1FB 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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