Malicious PDF — malware analysis report

Static analysis result for SHA-256 11b4e1902b5d9e04…

MALICIOUS

PDF

77.6 KB Created: 2021-02-17 03:37:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ec8645014eb9575fc53fad956ed00339 SHA-1: 4fdcffd6d21c6fefc782de981d9feeef9c2c7f03 SHA-256: 11b4e1902b5d9e042dbae2490a8b13751d73905e2b4ccf1e74dc5641e40fcc9b
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, 'https://leonvi.ru/wix?keyword=spotify+apk+mod+2019', suggests a lure to download potentially unwanted or malicious software, disguised as a modded application. While no scripts were explicitly extracted, the PDF format and the presence of embedded URLs are common for phishing and malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wix?keyword=spotify+apk+mod+2019 PDF link annotation
    • https://cdn.sqhk.co/sisadenev/gjzmOib/57504087329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487625/normal_5fd15b8d7acd9.pdfIn PDF document text
    • https://cdn.sqhk.co/lopumilekana/HigZfKb/knife_thrower_circus.pdfIn PDF document text
    • http://feldhaus-klinker-plitka.ru/amazing_facts_about_the_biblepfmt4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391308/normal_5fff5941ec8e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_60124fc9f2434.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365545/normal_5fce7d88452d5.pdfIn PDF document text
    • http://legovimoz.iblogger.org/152893986.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468537/normal_5fcfe504c4ffa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460449/normal_5fc9513ec23f1.pdfIn PDF document text
    • http://emmetrix.net/kabojemewamakisizijujolixul4i6.pdfIn PDF document text
    • http://yachts-4-sale.com/35252707834lbq4w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370088/normal_5fcd0fd1d4661.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/jcjcNMQ/nail_biter_gif.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/wizomoravazub/86783804161.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/wallet_apple_pay.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/76856673685.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/mixed_modal_verbs_exercises_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/vinanugaxalafew.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_off0000f309.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF309 5632 bytes
SHA-256: 35e81d08fd06d55feffbd384466e55f148301755cb93ab9edfc972910b83d187
font_01_sfnt_off00010646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10646 10344 bytes
SHA-256: 5404676c073cc1ad3ed152bbc003171f54db74ce476b264febb9714cfdfb9416

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