Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6538797a6bad2ef…

MALICIOUS

PDF

40.0 KB Created: 2020-08-02 02:08:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bddd4b20820552e06ce669ed0b2a235b SHA-1: 6416ef3c2abbb7b7fbbc9434629fa1cf0d81ad2e SHA-256: e6538797a6bad2efd59e48bfc4285efd2922cae3ee0f2c5dee21606504ed61d8
194 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded content, though heavily obfuscated, contains URLs that are part of this link farm, including a suspicious redirector URL. The primary attack pattern involves luring users through seemingly benign content to malicious infrastructure.

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=sufjan+stevens+chicago+lyrics In PDF document text
    • http://files.yourpremiersupplies.com/uploads/1/3/1/4/131453934/2da32887c.pdfIn PDF document text
    • http://files.mawptacoma.com/uploads/1/3/1/8/131872087/8880272.pdfIn PDF document text
    • http://files.zoeandjohn.com/uploads/1/3/0/9/130969436/kixasudevasak-jokodi-jodogatejamij.pdfIn PDF document text
    • http://files.winzerfarmcda.com/uploads/1/3/1/6/131637658/b8269.pdfIn PDF document text
    • http://files.beexploration.com/uploads/1/3/1/6/131606954/gijimurukuguwer_wesaro.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/1/0433/7208/5406/files/31881774175.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/21895923638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6117/files/53827606177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/4362410942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5376/8095/files/63751102742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/xabuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8688/9625/files/zedesanolowigokosakivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8011/2545/files/82584133670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3525/4171/files/tavidurojaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/2443323161.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_off00005d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D07 5484 bytes
SHA-256: bfa55323b3638e063a6fbf458c62b363797b591fa326be0c10cbf6cac2c91a3f
font_01_sfnt_off00006fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC4 10412 bytes
SHA-256: 94f7ffeed74ae3e6e5b7a63576a03aff3aad274c45b428b0750a6b45efc783aa

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