Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ad9424d7ac8106…

MALICIOUS

PDF

66.3 KB Created: 2020-10-28 22:53:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 83db8b1450f8e63a6ddfd78dbb9b6ffb SHA-1: 272b8219fd56d56054ee2d9a7ed095e885a38aac SHA-256: b2ad9424d7ac810698bbea355d25eb310eaf32fcb67feb660ecf5acc6d9bea00
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure disguised as a "Schwinn grit bike manual" and embeds a link to a known malicious redirector. The ML classifier strongly indicates maliciousness, and the PDF structure suggests it's designed to drive traffic to potentially harmful sites, likely as part of a phishing or scam campaign.

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.link/123?keyword=schwinn+grit+bike+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412899/normal_5f98edda22df5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386335/normal_5f95563d9daa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409403/normal_5f9426297b6cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389570/normal_5f8e2749017d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372982/normal_5f8fee64e1280.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0586/0248/files/motorcycle_foot_pegs_with_heel_rest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6649/0517/files/76567762385.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/545909c6-cb67-4551-be9d-6a4dca417987/40691220251.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/866861a6-7311-483f-8a4f-27d1a8f28e9b/one_piece_episode_602_english_subbed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9540f789-f34b-4959-8140-07ccd521f010/sucesion_cuadratica_ejemplos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3870/2748/files/59371308726.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb86e6c8-6fd8-4b37-8fde-e49c8d503f68/toyota_fault_codes_list_obd1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6897/2444/files/63805337266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50baffc1-2882-4d34-bbb5-916bbad82e0c/giza_death_star.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86c19051-c253-4b6a-8b2e-f0f0bffe65ed/40430909509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/4730/5635/files/laws_of_apartheid_in_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6693/1865/files/18127878143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5031/1076/files/48551909252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6690/8063/files/wiwebomobovuzegulujajozej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3766/2103/files/xatatulumod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/704aa904-7043-4078-a4ad-8fa9c57dcf2d/dedugofafuranavuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8589/8938/files/4457286492.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b69e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB69E 5208 bytes
SHA-256: 3e6bd11fcefcb9cd0c6639f5c388534f375b9ca53d1ef0530084560fecdbc7a9
font_01_sfnt_off0000c82e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC82E 11420 bytes
SHA-256: 97241b5747e3b42b8137812df4e9421725a12d9f390750048705ad897199e04f
font_02_sfnt_off0000ed68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED68 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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