Malicious PDF — malware analysis report

Static analysis result for SHA-256 66cd7d344cbe5bc2…

MALICIOUS

PDF

81.9 KB Created: 2021-02-09 18:42:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: cad1317ed54dd42911e2ec785782556e SHA-1: 79d5ee5dfc616bbcc40855bb1f3f65f9356699bd SHA-256: 66cd7d344cbe5bc219a5747568898e78fdba908fd17e461a6e878dffd246bbfb
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, and it contains a large number of external links, indicating a potential link farm or phishing lure. The document body, though heavily obfuscated, references 'Kahlua espresso martini can nutritional information', suggesting a deceptive pretext. No scripts were extracted, but the presence of numerous external URLs points towards a phishing or SEO manipulation attack.

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://maypoin.ru/aws?utm_term=kahlua+espresso+martini+can+nutritional+information PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452608/normal_5ff18424d9bd3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374703/normal_5ff01f8f0b82c.pdfIn PDF document text
    • https://kaxesudinebeg.weebly.com/uploads/1/3/1/3/131379803/fixiwuneni.pdfIn PDF document text
    • http://clipshd.design/lekewaxuxanutopiko5yh8i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409826/normal_5ff0409acff8b.pdfIn PDF document text
    • https://bagirarivevi.weebly.com/uploads/1/3/1/3/131384609/savibevibodudal_wutatimipesub_pariledit_bisulikodilefo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481540/normal_5fe8cc92962af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419191/normal_5fdf3b638501a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457838/normal_6022a1acd0c4b.pdfIn PDF document text
    • https://rexawalifutox.weebly.com/uploads/1/3/4/4/134458468/muvokukarenobowi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378386/normal_5fe996ae15887.pdfIn PDF document text
    • https://wewuketis.weebly.com/uploads/1/3/5/3/135327502/4405517.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404108/normal_5ffcc5abad77e.pdfIn PDF document text
    • http://menegatuje.iblogger.org/arizona_defensive_driving_school_final_exam_answers.pdfIn PDF document text
    • https://banukusisazej.weebly.com/uploads/1/3/4/8/134893357/rirokom-punaruf-sekikurarub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481403/normal_5fe7843deb358.pdfIn PDF document text
    • http://remont-kvartir-otzyvy.moscow/free_live_streaming_apps_for_android0dusl.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
    • http://vebadivikini.rf.gd/bt_chia_s_wifi_trn_android.pdfIn PDF document text
    • http://xofivijisaja.rf.gd/50149129188.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_off0000f4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A4 5108 bytes
SHA-256: 6ee732c97c0c3b6f4e73827f1d172f879f58398f35f2aba4b17e3533ef0b4ea6
font_01_sfnt_off000105e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E0 11436 bytes
SHA-256: c67a2eb8b354617bb9558ddd8dc40c4636ecf651ec90a43e52ed6a42d25e9308
font_02_sfnt_off00012bc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BC2 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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