Malicious PDF — malware analysis report

Static analysis result for SHA-256 04bb11593fb2cd82…

MALICIOUS

PDF

37.6 KB Created: 2020-11-02 17:40:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b187a475b25d38f68457cb82796a0d27 SHA-1: b2e54e5c5dcf69d77b4e712a5ca8d2d4d26cda48 SHA-256: 04bb11593fb2cd82df35675dec98440ca3fa2793c5f2892afc885cbc57d7d730
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 large number of embedded URLs, forming a link farm. One of these URLs, 'https://ttraff.com/pify?keyword=hillcrest+thrift+store+platte+city', is identified as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious websites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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.com/pify?keyword=hillcrest+thrift+store+platte+city In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417986/normal_5f98777686728.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411686/normal_5f99155c34ce6.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/4952322.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369189/normal_5f87ae0bbb0e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388422/normal_5f951146327f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f97c09a2baf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f95da8b7c282.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409236/normal_5f9f10aadecd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384045/normal_5f9c2abfa918f.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/1/0504/8696/8480/files/newisitilufubisibinoxuvab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3689/6151/files/26399463401.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95764755-89f2-432d-ac74-4cb8cb303207/39713077392.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5337 5164 bytes
SHA-256: 6a568e938919665d041e4d3e83fd8f82926410a37834c5672b9ab75b92d7e2f3
font_01_sfnt_off000064c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C9 10904 bytes
SHA-256: 356cc43c96d3f9744f96177b683c0b34d6cfdc0688cb12a007e0ad5a1bac55f6

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