Malicious PDF — malware analysis report

Static analysis result for SHA-256 674a84f75fab9f88…

MALICIOUS

PDF

82.1 KB Created: 2021-03-27 14:23:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: ccbb04e5c3553f49e72b1dd0aa558dc5 SHA-1: 582433f962e7124c459658bbf4ad4b67efdaf251 SHA-256: 674a84f75fab9f88576ed22239bf017ad0871a81972f6fe2f395a2e830d74b5f
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document contains a mass of external links, with the primary suspicious URL being https://golowaki.ru/award?keyword=rational+combi+oven+manual+pdf. The presence of numerous links suggests an attempt to redirect users to potentially harmful sites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://golowaki.ru/award?keyword=rational+combi+oven+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/rikopekela/A9YMjgj/best_co_op_switch_games_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/oLHjadF/ludo_star_2_apk_download_pc.pdfIn PDF document text
    • https://goponubinolofuv.weebly.com/uploads/1/3/4/6/134695307/9b319.pdfIn PDF document text
    • https://jumemovelavubar.weebly.com/uploads/1/3/4/5/134516611/6687446.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/UswhfWJ/jujawizeratidex.pdfIn PDF document text
    • https://wumikedamuzu.weebly.com/uploads/1/3/4/3/134324885/712074fce0690.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zakunafu/shadowrun_5_character_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/972619ff-6688-40b4-9b60-1d8a8bb18498/what_vegetables_can_be_cooked_in_an_air_fryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/595d8f5a-ce1e-432d-9555-945c6cf34bd5/20571211982.pdfIn PDF document text
    • https://b7eb3c74-9f10-4efd-a612-efb7ea03662f.filesusr.com/ugd/7198c1_b4c86f5fcc8b44649b70d07f1d0b3820.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/luborinizu/4131742326.pdfIn PDF document text
    • https://d497f082-4895-42de-a72c-038d9367c8a3.filesusr.com/ugd/8e727b_e195fd9b97c049da92721ccdf284def8.pdf?index=trueIn PDF document text
    • https://c6506652-bf5e-4f52-be36-03dbfaede22c.filesusr.com/ugd/f74919_c15e5c9483f1470eb5e32f3962300f6d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/cafe_de_flore_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lonozote/choice_is_yours_stick_figure_live.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/bajonudegejunajewuzovatot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1b0cdad-9bd9-4645-83f2-6a9ab1226e9d/michael_talbot_the_holographic_universe_download.pdfIn PDF document text
    • https://6acf0ca1-aa41-4771-8b91-54baff69ee7f.filesusr.com/ugd/7d1dc9_d6722bf68ad744889632aa0db7c9b994.pdf?index=trueIn PDF document text
    • https://3fb740b9-71d8-4183-8edb-de11b68c0a29.filesusr.com/ugd/1fbf8b_efd2e09722c14639a3c766c5333d9f8c.pdf?index=trueIn 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_off00010343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10343 5232 bytes
SHA-256: fd8ec7c25b3de21ddf3d6a3fc92f3d0ae16e384a69260461458cdb7cd52767b0
font_01_sfnt_off0001150f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1150F 11596 bytes
SHA-256: f9fad35c8f1423d0fbebe80276c4fae5af789ba30eca5bd6d60a595996ee668a

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