Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7bf9e2cc928b5d2…

MALICIOUS

PDF

50.1 KB Created: 2020-11-03 07:55:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0def3401010e9bc4d0836cd398797b64 SHA-1: d8bbd9bd81c15eabc6ad061c2ff3c9c5dacd3c10 SHA-256: d7bf9e2cc928b5d2a2cf3e080f692091023f269ffb2de2b0febc4f51139414bd
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=ms+queen+elizabeth In PDF document text
    • https://folemazilepi.weebly.com/uploads/1/3/1/1/131164248/2ed6eb7ca106a.pdfIn PDF document text
    • https://tatunonomufobuf.weebly.com/uploads/1/3/4/3/134355176/694e642b209.pdfIn PDF document text
    • https://kikuriniwabutip.weebly.com/uploads/1/3/4/4/134440093/jipekejagidifu.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/1/0481/6014/5559/files/all_video_downloader_apk_uptodown.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9464/2340/files/83920853414.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/lifedo.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/accounting_information_system_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/2447/2002/files/nederutatipujasajinuxef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24b848c2-7f33-4e30-b24a-bdc68dd43a5d/35186221035.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e20d8720-2cb7-4466-a407-1b99c7f8e717/shane_sweet_now.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/cube_program_for_ppsspp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0634/0515/files/tidegabusuxofitagabomok.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6074 4768 bytes
SHA-256: d16f590c5b659a496614219b3f0e9b1732ad8b622c4490f7ee3a52beda6729c2
font_01_sfnt_off000070a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70A6 11744 bytes
SHA-256: 1a1c90820eba98894f8ee4f85b7db90432a5b7b9ac6393a15f8b24599eedf1d4
font_02_sfnt_off00009841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9841 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd
font_03_sfnt_off0000ad6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD6E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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