Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bea8f2fcf57a883…

MALICIOUS

PDF

64.6 KB Created: 2020-12-23 17:15:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d51a74086976bf3517d60a6e1290bf5b SHA-1: d2401cdcb1448197bfe6cfd28368b1e2496c5adc SHA-256: 2bea8f2fcf57a883b9f7339d4dd05a73ad2556d445d1490934da430b33bc07f2
164 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains text related to 'Bonspiel draw templates', which is likely a lure to encourage users to click on the embedded malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffking.ru/aws?utm_term=bonspiel+draw+templates
    • https://cdn.sqhk.co/zewuxumaro/hjgzijl/patrick_superhero_name.pdf
    • https://cdn-cms.f-static.net/uploads/4384831/normal_5fbdecbbd29f1.pdf
    • https://cdn-cms.f-static.net/uploads/4385436/normal_5fa4e4fc540e6.pdf
    • https://cdn-cms.f-static.net/uploads/4381528/normal_5fa60f4af2c6a.pdf
    • https://cdn.sqhk.co/dudazume/FTDOhcp/throne_of_eldraine_price_list_alternate_art.pdf
    • https://xibogunef.weebly.com/uploads/1/3/1/3/131398295/2964e66e93.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nuxomigo/95861998649.pdf
    • https://uploads.strikinglycdn.com/files/d25ee8b3-0286-4493-b6b9-c05831f5ef7a/rovopapobikosuxi.pdf
    • https://s3.amazonaws.com/jipowumat/powiziwifibekijikarura.pdf
    • https://s3.amazonaws.com/zarelusipofox/lamogukilazifaxogorukufop.pdf
    • https://s3.amazonaws.com/pulavokaxe/diviziwemozobofatute.pdf
    • https://s3.amazonaws.com/doxifuba/29243490000.pdf
    • https://uploads.strikinglycdn.com/files/8248de4d-1adb-48b0-8f7f-c31872c72e70/correcting_run_on_sentences_worksheet_high_school.pdf
    • https://uploads.strikinglycdn.com/files/2d400636-a11f-402c-98bb-e44ae69ec590/marijuana_horticulture_fundamentals.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be82.bin
ac69058340b953cf0eb7e3445bca444e9caa7322e4ca81f12604beb70d38c4a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE82 5248 bytes
font_01_sfnt_off0000d04f.bin
de32fc48d5b64c151ad218ff27c9d8ce138a7121ce188caf06c2518256ad7728		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD04F 10880 bytes

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