Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dd7d2b23daad5df…

MALICIOUS

PDF

64.9 KB Created: 2020-12-19 12:34:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: adcdea5f4ed837110a23567ae76d07e8 SHA-1: 907428e6e019d533bd4a79e510c1c2af22c878e0 SHA-256: 6dd7d2b23daad5df0a292a20796dfb43d1ec4a70996128e3b12be3743ff14ade
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL indicates an attempt to lead the user to a harmful destination, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/aws?utm_term=wallpaper+white+tiger In 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://static1.squarespace.com/static/5fce5832564f736a5831f2e2/t/5fd640655488895576a6b893/1607876710219/83560511928.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ce785426f52a30dad215/t/5fd6181b5b1f6f7539ce739a/1607866396658/pikachu_pumpkin_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/jebusinodovik.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0df209955c744b53b696b/t/5fcf5cd214319a51dc3059d9/1607425235053/download_racing_smash_3d_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b28a074e-2fb0-4e03-8839-efd2ea35d9e9/wifegofasi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc505c01c8c7413144c6c55/t/5fcba3d664036b614391b5be/1607181272240/xafulakegemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfb828b4-207d-4593-a732-799fc737032c/best_buy_sandisk_micro_sd_card.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3862f326-da0b-4c24-a0b0-84c17fcf6f2b/diccionario_de_filosofia_nicola_abba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5472cacd-d795-436b-b3b1-14d9c230d44c/17444455706.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/dulizigikozozo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce8eac813c4d59a83af3e8/t/5fd6a89972b1137fa980eb94/1607903386529/icao_annex_10_volume_1.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/the_river_bend_venue_big_sandy_tx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1f036bd-a1ba-4667-875e-a70e9f9f5d1e/73593431429.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_off0000b52f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB52F 4580 bytes
SHA-256: d7a03fb5457965c1b2314f7e2fbe69db09f6c540bf01d1d661fa3c58a5500fda
font_01_sfnt_off0000c4e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E6 11092 bytes
SHA-256: b4618f3725db10628e33d86f64b7926bbcc70ef4ced111638f4562ee665e3a81
font_02_sfnt_off0000e8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F6 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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