Malicious PDF — malware analysis report

Static analysis result for SHA-256 364f07ace0842d22…

MALICIOUS

PDF

47.1 KB Created: 2020-10-25 23:19:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 70942c16c926008c65755a51485309fb SHA-1: 0e4cb84b9949fad586ee2e311fb173742c338fb8 SHA-256: 364f07ace0842d2211e5087bff9930e0d6f8fcf634d599fcb07af5f22034f30a
184 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to redirectors and disposable hosting, indicating a link farm for SEO manipulation or malicious redirection. The primary malicious URL identified is https://ttraff.com/123?keyword=comment+modifier+un+pdf+android, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to modifying PDFs on Android, likely a lure to entice clicks on the embedded malicious links.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=comment+modifier+un+pdf+android In PDF document text
    • https://xigeworimejol.weebly.com/uploads/1/3/1/4/131483719/7582b93cb050cc.pdfIn PDF document text
    • https://fiwisiroveton.weebly.com/uploads/1/3/4/3/134339953/d17f18b2.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/b0cf8.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/1641091.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/javofo.pdfIn PDF document text
    • https://tugoxalimirufa.weebly.com/uploads/1/3/4/3/134310877/sipalemugud.pdfIn PDF document text
    • https://mizunilido.weebly.com/uploads/1/3/4/3/134352057/6823053.pdfIn PDF document text
    • https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/teletufefulet_xezetub.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://uploads.strikinglycdn.com/files/d0bc5905-9d35-4df4-a9bc-b3b8d9de9f50/nidujejideveteli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3250700-9e40-44fc-a4bb-2f4af201c1ad/wittenborg_fb55_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44f07f3b-cfc0-4e4c-bcd0-6ecd25832bec/91681522572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f597dbe-1dfd-4bd8-ba98-3a60269fdf0b/21835460118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7d586f7-a1b4-444f-a38b-02fcd7c7e8fd/lenuxazuboditif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/gutojimizodufaxaselu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/7299/9590/files/34310141760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6743/1329/files/panazaxasowatur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9451/8181/files/kentucky_wesleyan_football_schedule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1681784b-dc5a-4318-99fd-da067489472f/mubunenisaxonix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92079362-5aa0-478b-b036-bf8aae6fdb63/poxolonesazuwanipodawew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9082/8194/files/indicadores_macroeconomicos_del_peru_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5891/3689/files/81103159421.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_off00006975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6975 4880 bytes
SHA-256: 81161b4a0656126dfe1bef21acb1c881a425862d9906c86a5399f3ae4005bf03
font_01_sfnt_off000079ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79EF 11704 bytes
SHA-256: 8f882b83d0812fb9c49ba3cacfff7ca2654ee949e315214d48289d887297f603
font_02_sfnt_off00009eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EB0 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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