Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cbdd1875bce680a…

MALICIOUS

PDF

53.0 KB Created: 2020-08-11 17:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4067668cd2c0226d91e228a59d52f59d SHA-1: f8a23ca5ca85d7c970bb76870eb66931f06c4efe SHA-256: 1cbdd1875bce680a5e49a32f61ff1afc564000cc38693fc5181c3bd78441889b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also present in the malicious redirector link, suggesting a lure to trick users into downloading further malicious content. 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.cc/pify?keyword=islam+main+aurat+ke+huqooq+in+urdu+pdf In PDF document text
    • http://files.brightideasantiques.com/uploads/1/3/1/6/131637372/jugedegurovala.pdfIn PDF document text
    • http://files.embroideryisvital.com/uploads/1/3/1/6/131636746/fa9aa5fd3bb913.pdfIn PDF document text
    • http://files.childrensartlab.com/uploads/1/3/0/8/130813827/5194585.pdfIn PDF document text
    • http://files.aria-food.com/uploads/1/3/0/8/130874162/zisudunurazefo_gusigegu_bogeg_bapuzakekef.pdfIn PDF document text
    • http://zapexu.cyberedchristianschool.org/uploads/1/3/2/7/132710780/gadasipat.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/1/0431/0512/4516/files/kopojazinatixabumakuvoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/10507658308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5084/1750/files/98703122354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4138/0759/files/75851843375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/4293/3657/files/alicante_bus_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5112/2842/files/14263859868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/60028030544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/lepajukalekos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/netekixewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8830/6586/files/prefix_and_suffix_worksheets_7th_grade.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8535 5408 bytes
SHA-256: d785908375dced81ca66a1c1ad1574ab145d4b60bc1b0964c9f49be115661227
font_01_sfnt_off00009761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9761 15288 bytes
SHA-256: 49dd945b93d6f979f28faa6586ed57f861f75f90a039e1fb71c3aa6ec1377b0f

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