Malicious PDF — malware analysis report

Static analysis result for SHA-256 45cc6c0818110d2f…

MALICIOUS

PDF

66.5 KB Created: 2021-02-16 09:35:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 0043d02ddf61168b104f7b4567442389 SHA-1: d27472eab2545823acb081fd676342716d419db2 SHA-256: 45cc6c0818110d2fbd38321bc5b2788a6bbcd7ba11b385c4564cf2c38dbe542f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text fragments related to the URL's apparent lure, suggesting a phishing attempt disguised as a search result.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://jottigo.ru/strik?utm_term=kenmore+gas+range+362+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4381105/normal_5fc630fd031c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381748/normal_6008de5e5fa35.pdfIn PDF document text
    • https://cdn.sqhk.co/mogowepuw/jiWjcjY/chikungunya_rash_vs_dengue_rash.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458412/normal_5fe82ef345a3e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385848/normal_5fee6a5b55915.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428329/normal_5fd3222885d1d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389801/normal_5ff37b7eef53f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411500/normal_5fff9bbfa75b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366374/normal_5ff7715975dd9.pdfIn PDF document text
    • https://cdn.sqhk.co/pibutuvopedu/ajfHifu/large_rounded_corner_mirror.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370767/normal_5fe0b13966684.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366022/normal_5fe5a9ca949a2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487197/normal_6008829fb023a.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/fekazudabo/zememunopulabijomijavevit.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/7785569893.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/dotedogoxekupexav.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/negijogukosudujemute.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/33825367654.pdfIn PDF document text
    • https://s3.amazonaws.com/timituvupame/malamed_local_anesthesia_book.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/video_instagram_via_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/58789672099.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC573 5424 bytes
SHA-256: 41409bbb413f0e61827111cd320584b711f04b8421bb30ee03a719d69afbcd9d
font_01_sfnt_off0000d7d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D5 10948 bytes
SHA-256: 37138cf3d15156f7ef00773acfa480354abc0c6703e2d4bced582775490abacf

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