Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e1ded6f195099c6…

MALICIOUS

PDF

96.8 KB Created: 2021-03-22 07:14:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 354949f88243efc57b1664b48c30fb5e SHA-1: c1d84bc297fd8c13b15074fc4569bcb9481e7e95 SHA-256: 8e1ded6f195099c6a036fdcb4fa60ababa31500d6c75c8e3d08c5e56287bcf5b
244 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on disposable domains and flagged as part of a link farm. One critical heuristic indicates a direct link to known malicious redirector infrastructure. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/123?utm_term=soundtrack+deadpool+2+take+on+me In PDF document text
    • https://cdn-cms.f-static.net/uploads/4454432/normal_5fd91b67d3ab5.pdfIn PDF document text
    • https://sazavilekin.weebly.com/uploads/1/3/4/8/134851962/rujoviverofubun-notivekuforitir-rifapujurife-ponivodajo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365551/normal_6008741f33bd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384039/normal_5fd2513bf09d5.pdfIn PDF document text
    • https://dofafurubes.weebly.com/uploads/1/3/4/7/134762343/0e985.pdfIn PDF document text
    • https://toroxamaje.weebly.com/uploads/1/3/4/0/134017611/dapusanapuxis-xexirog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501998/normal_6015c98b6897f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490264/normal_60209a93c6d07.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://4eff3ec4-d147-45d1-be73-876d9e1d0019.filesusr.com/ugd/efb3f0_8dd9cfe9dc7547cd82540fcd2f568bad.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6530890-cb53-4d85-9c95-67d319d94b89/51601971708.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9640266-e7ed-44b3-84f0-3c0a2f12f033/the_new_encyclopedia_of_modern_bodybuilding_the_bible_of_bodybuilding_by_arnold_schwarzenegger.pdfIn PDF document text
    • https://80c93ba6-74df-4afb-9852-3a83eaba20e3.filesusr.com/ugd/4cf28d_6577f7afda2f4aabb0cf03418d2392e6.pdf?index=trueIn PDF document text
    • https://0dea665b-aaaa-42f3-a52c-f86f0fd1efa2.filesusr.com/ugd/8b9728_27d084a654ab4656b8e5d42281d2e37a.pdf?index=trueIn PDF document text
    • http://pexevogawi.epizy.com/local_anaesthesia_in_dentistry.pdfIn PDF document text
    • https://e3e1c2aa-7f41-47b0-8c2f-d823cb48b857.filesusr.com/ugd/7598fa_1c791924b5404e89bf61a8cf163a6772.pdf?index=trueIn PDF document text
    • https://d992f69e-bc5b-430a-92d7-abfd66d0380b.filesusr.com/ugd/6f7357_2d891ae506a44f31b63076c914ff851b.pdf?index=trueIn PDF document text
    • https://63aa7d51-6c54-48cc-ac87-b710a0da19c3.filesusr.com/ugd/c8d394_18c61368c349449697b6f3cd95d80be4.pdf?index=trueIn PDF document text
    • http://pititonekeget.epizy.com/ayso_united_coaching_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4efeb35e-ccf3-45cc-85a6-59c6e6d4a285/amelia_bedelia_guided_reading_level.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001158b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158B 7484 bytes
SHA-256: f1d7266da48dcb740f3e1d43850cc3b710e6bf499384280cc40cf3fe398503c8
font_01_sfnt_off00012ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF3 5172 bytes
SHA-256: cbc0667d1fb56285cdfe7af34eb208addce690b2aba51283ff2536af8919bccf
font_02_sfnt_off0001406d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1406D 11752 bytes
SHA-256: e0a7536310ac8ccf4760a9c09f6b370f695c771cd35e699c09a77f7dfef6738a
font_03_sfnt_off00016786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16786 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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