Malicious PDF — malware analysis report

Static analysis result for SHA-256 0303658ee7769886…

MALICIOUS

PDF

61.0 KB Created: 2020-09-02 00:02:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bcf9e6eec0bda7592aa9ec0da632bce3 SHA-1: 06b2f3e89d50109835e01e284d2f2f66a531ffdb SHA-256: 0303658ee77698861a85e83ac77280ef184e86788067fd53c4d01d60a4412aaf
194 Risk Score

Malware Insights

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

The PDF contains embedded links and a URL in the document body that point to a known malicious redirector. The heuristic firings indicate this PDF is designed to link to malicious infrastructure, likely for phishing or to serve a second-stage payload. The ML classifier strongly supports the malicious nature of this PDF.

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/wix?keyword=factoring+practice+worksheet+algebra+2+answers In 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/1/0431/8799/4792/files/segekujifajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/zotoxijosowetisefelivoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/a_plus_certification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7396/1125/files/32020718013.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/51c472_4b7d21e8f32b4518bf026ff9cd93c809.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2ca22b_afb93329c1254d4dbc83160f231ad08c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e2f197_c2096b5efeff475691e0cd3a0491e618.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/23e9be_c617820d7cb54ab3bd4e985b33ade204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/ditoruwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2097/4242/files/52137238301.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/99965f_113e889de373463a90d056d502571270.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7e6083_689e451e512249e8bb205d6cb9e47f91.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/5ed537_990572a7f5144cc6a1cefbfff196bc8a.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 6

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_off000098af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98AF 5368 bytes
SHA-256: a150fb2038446951a35694129d258d5680bc82f534de401c98d6d0948e72d774
font_01_sfnt_off0000aaf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAF6 14268 bytes
SHA-256: 6e57d13f436bfe5fd152c741d3afe6e99643b06c210757691c257203474ad588
font_02_sfnt_off0000d877.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD877 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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