Malicious PDF — malware analysis report

Static analysis result for SHA-256 17a1fe4087db81ce…

MALICIOUS

PDF

42.7 KB Created: 2020-10-29 23:55:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: f6cfee785d634c75cb309c7ee93413a6 SHA-1: d958497c96dfdc13a46415301ed718712bf8b734 SHA-256: 17a1fe4087db81ced348952fefd6ba2918d988fcf51887285db862461eaa859e
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ggtraff.ru/strik?keyword=luxury+shower+curtains+amazon In PDF document text
    • https://cdn-cms.f-static.net/uploads/4392215/normal_5f99495809672.pdfIn PDF document text
    • https://jinokafolamod.weebly.com/uploads/1/3/4/3/134310646/bf1f02112032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374359/normal_5f988ff6ef31d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379231/normal_5f8bbb0b61ab7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366408/normal_5f898e7ac2ff6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f878ca3b6ffb.pdfIn PDF document text
    • https://jaxebenub.weebly.com/uploads/1/3/4/2/134266064/9320368.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f87b2a639471.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/1/0507/1857/2704/files/8624654940.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/27914346381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4060/2269/files/isle_of_tune_desktop.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/mowezute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/0184/5162/files/graphing_patterns_worksheets_grade_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2609/8594/files/16338880478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/9378/6269/files/increasing_battery_life_of_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0507/9524/9832/files/cause_and_effect_american_revolution_worksheet.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_off0000689b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689B 5260 bytes
SHA-256: c275992e3ee85609a9064b7891f75574683f3ca8625efc3600620a7024733438
font_01_sfnt_off00007a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A7D 10492 bytes
SHA-256: 579cfdea4bcb5a6f3b17be3c5f3e4f275d3bb1d2fe4189272753ea806185d4ab

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