Malicious PDF — malware analysis report

Static analysis result for SHA-256 850ba6a1030e53d3…

MALICIOUS

PDF

42.7 KB Created: 2020-08-14 15:47:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: adfb80ec93fe1abf740d3ca50c1fb159 SHA-1: 825bd674138c52cbf3bf319b6ae0c11f87af11e0 SHA-256: 850ba6a1030e53d331f22457a22bd595d01d2554faba7a3e6fafa496ceed231d
234 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a lure for credential phishing, specifically mentioning MFA or one-time code harvesting. The document body, though heavily obfuscated, contains URLs that are part of a link farm and a redirector, suggesting an attempt to lead the user to a malicious site. The presence of embedded URLs and the ML classifier's high confidence score further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.cc/pify?keyword=aadhar+card+application+form+gujarati In PDF document text
    • http://files.patriciacarriganartist.com/uploads/1/3/0/8/130874360/fojezufebegekagad.pdfIn PDF document text
    • http://files.medishfoods.co.uk/uploads/1/3/1/3/131379396/a284a804.pdfIn PDF document text
    • http://bineno.walkingwithieke.com/uploads/1/3/0/8/130814328/pedutezozifoduvusapa.pdfIn PDF document text
    • http://fipemo.daleismopeners.com/uploads/1/3/0/7/130775971/8ff2365c77f.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/1/0431/0610/7552/files/79763747428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/lawepap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/convert_binary_to_decimal_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/gataziserodujoboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/vilip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/23154056507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/bifab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/14546636616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/intertherm_water_heater.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6191/9396/files/vofedikusozotejo.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 8

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_off00006976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6976 5456 bytes
SHA-256: f065c881379ea50298fb39526ba5bc49f0b2d98acc18bd03676fbecf529d0aa3
font_01_sfnt_off00007bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD0 9852 bytes
SHA-256: a7eed57e2f79573cbd57adfda7cea401273971bb1af1561f1b64b0d49b83dff0

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