Malicious PDF — malware analysis report

Static analysis result for SHA-256 1650130bd3e3f4f5…

MALICIOUS

PDF

61.3 KB Created: 2020-10-30 01:56:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6576d37a653a243eee47eb670c232d36 SHA-1: 15cb0b22b1e30922df4e4af78eddad704345dd2d SHA-256: 1650130bd3e3f4f5f14625cf545913edc9c6b6149069b74c28ef83ee3d507be1
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/123?keyword=malefic+truth+dragon+trivia In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f871daaeb7ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368497/normal_5f925943cc3f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383806/normal_5f8f5eabb5d40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_5f945d21cf79c.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/7304884.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384851/normal_5f92c47da68b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379220/normal_5f8de18cdbcb9.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/1/0496/8605/3045/files/text_to_voice_app_android_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6118/0064/files/xoledomefobapunozag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9872/5271/files/horseshoes_of_a_zephyr_pathfinder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0406/8516/files/basel_operational_risk_categories_level_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/741a744f-4127-43b6-a90f-d9c30585d673/gaxurenupunojajeki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51c3d981-0c79-4a64-ab59-62880af55b02/64496923839.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00008c07.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8C07 4436 bytes
SHA-256: d2fbad8f384add278df7aa6102fb586fe9a83abffe4889a4e514ece878558741
font_01_sfnt_off00009b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B82 5168 bytes
SHA-256: 7c1a6a51a687c06dca9bc69076f3eb95a7ce41b7d0379bbc784188b3f67c2e0f
font_02_sfnt_off0000ad29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD29 10640 bytes
SHA-256: fba9971e692efb9efec65e34433b3b1f6291377eb5c5998f69496ea4714bda02
font_03_sfnt_off0000d195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD195 16424 bytes
SHA-256: 889f3766a2d7e6b60350cffde8b2528be68efd909a0dd7a0cab2784001b7d185

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