Malicious PDF — malware analysis report

Static analysis result for SHA-256 458c4e5711a8aaaf…

MALICIOUS

PDF

49.4 KB Created: 2020-08-02 20:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 716674eca6b274c4664868fd6cefb5b7 SHA-1: f508a257e8c1d2250b4f320917704e40dd3e469e SHA-256: 458c4e5711a8aaaf86f77ae8866891bc803cd4a9381cc5444e87d9681b980343
254 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'openssl signing csr' and a URL pointing to a malicious redirector. The 'SE_SECRET_RECOVERY_LURE' heuristic indicates the document's intent is to trick users into revealing sensitive information, such as private keys or backup codes, likely for financial gain or account compromise.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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=openssl+signing+csr In PDF document text
    • http://files.supcoloradosprings.com/uploads/1/3/0/8/130874204/ecde8d828d.pdfIn PDF document text
    • http://files.smartrevivemobile.com/uploads/1/3/1/3/131381677/042345.pdfIn PDF document text
    • http://files.aryabakesapie.com/uploads/1/3/1/4/131452950/295195.pdfIn PDF document text
    • http://files.mataochoa.com/uploads/1/3/1/4/131454143/8230250.pdfIn PDF document text
    • http://files.aedpfingerlakes.org/uploads/1/3/1/4/131452741/potixugunezeb-rojupubisibiju-menekife.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/1/0429/0933/5715/files/vazixugegulesedenaduzex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/bafowim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0735/files/8040677635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/12390430219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/dilevamal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3502/3765/files/middle_earth_minecraft_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1900/2279/files/how_to_make_potion_of_harming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/pikelovob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/95150952463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8374/1849/files/pefowenasatibokeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9462/0837/files/wosegidobudaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/88071091663.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE4 4516 bytes
SHA-256: aa9ba2e02a2effb77be334f19a1dc285c5c2e72ab6bb8a018f358a3369cd2b94
font_01_sfnt_off00007d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D36 14544 bytes
SHA-256: 6b47945c0e2499b09692a20b94816abb24e0228624dbdfb8e1c8f48583256ed9
font_02_sfnt_off0000aa36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA36 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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