Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf772e408dc97bc…

MALICIOUS

PDF

44.4 KB Created: 2020-10-28 07:11:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3c931430cec8fbe0caa64f905c955bfb SHA-1: 1f6a78235fbf6634b1c32c86e560aaeff2479cac SHA-256: bdf772e408dc97bcae9b3557c8d039a057cacf55225adfd4ce3959aeae020c76
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to 'Hampton bay ceiling fan installation manual' and includes the malicious URL, suggesting a lure for users seeking this information. The ML classifier also strongly indicated maliciousness.

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://gettraff.ru/pify?keyword=hampton+bay+ceiling+fan+installation+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379379/normal_5f909213ed5ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367947/normal_5f89cabdd0f2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403952/normal_5f952c0be2396.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5f8e01725cfbd.pdfIn PDF document text
    • https://bawilawuvibowe.weebly.com/uploads/1/3/4/4/134401702/811157.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/9649549.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/160b9150-35b0-4297-893f-c04dba7beb9b/89464556991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab88dfd1-1e5d-423a-9182-ba2ec8ce94b0/botanica_forestal_libro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a11b846-e4fd-4f03-9553-74f20fe3762a/34354032011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8dd1fe0-e131-4926-b492-9249fc01f414/pofogumaruxomuvigebe.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/master_of_business_administration_curriculum.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/78812881056.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2b2c503-a42a-46f2-b5a8-319b2ab9c786/tevexadaruromivelipukofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be494fea-c8d9-41a5-8324-ac2f0b767712/subepuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5792ed3-ee39-43d5-b0e4-07d7742416b3/kipaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d47fc27-f056-4f48-a6ea-4361d7bbf1db/59401922160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0507/8434/files/power_rule_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/16932061270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/2020/5211/files/oxo_shower_caddy_bed_bath_and_beyond.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8406/6205/files/bamaranarozasuxiz.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_off00006fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCD 5444 bytes
SHA-256: 231a2f2de5d2be9afd9406b6a6a7b4de1c0d9d6ecedd4362bc89ff17e012f3b8
font_01_sfnt_off0000824b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x824B 9964 bytes
SHA-256: 69ba0095f9670c5ac312d4c9425f54a263be3ceaed062e73c19ed2153a5fa295

Open this report in the interactive analyzer, or submit your own file for analysis.