Malicious PDF — malware analysis report

Static analysis result for SHA-256 14edc053a601dcae…

MALICIOUS

PDF

43.0 KB Created: 2020-10-31 05:43:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6f15c2f6b69a7922dd66fb6d1c57f3a0 SHA-1: 54122abbf3fba7b4e8ddbbabff0f5ae3c7144ba2 SHA-256: 14edc053a601dcae7418880dd0d4b2662d3de42108c78419addabaaab54cea6e
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to a phishing page or malware download. The document body, though heavily obfuscated, contains the same redirector URL and keywords related to a popular event, suggesting a lure. The presence of numerous external PDF links also indicates a link farm, often used for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=nfl+super+bowl+schedule+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4394060/normal_5f99611091154.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5f93b81ac4156.pdfIn PDF document text
    • https://jikolugoxolij.weebly.com/uploads/1/3/1/3/131379047/91a135ad.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/1/0498/0886/7491/files/android_auto_bluetooth_settings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33852f97-0a55-462a-b9b6-7f89c7698f74/demawikodobofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea6c5cfb-878f-4965-a4c2-a82fc249c54c/45813917920.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1903b0dd-83e6-4430-99a9-7c5c203ef6e6/pekejotaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/99545665286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9661/4079/files/xexafilaxokesonobumama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/7107/9068/files/nice_guidelines_gestational_diabetes_levels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1536/5020/files/14745961041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7622/2118/files/zekozenezizidonevabokerim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7941/0862/files/pre_action_protocol_professional_negligence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b16f05c-697f-40c7-b668-252cfd2378d0/31986982372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/6682/5112/files/buworawojijaxowu.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/zidenozofibezofol.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_off00006777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6777 5508 bytes
SHA-256: 0564e01c1b18351aa6ebd6814b83dc9ced9b09bea47189bc1a61c82f113a3f37
font_01_sfnt_off00007a4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4B 10896 bytes
SHA-256: 79b887a186f1481b6efce66e2c84c76eebeeb569dbecebb2ba22d4ddeaafda2c

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