Malicious PDF — malware analysis report

Static analysis result for SHA-256 32bfd715dc1bd1ab…

MALICIOUS

PDF

68.6 KB Created: 2021-01-06 02:21:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 92b8cfa8aeafedccc579e9abdd04d9df SHA-1: b01f23abb6ba1a007c950d5f2fa5065a86d91cae SHA-256: 32bfd715dc1bd1ab86da0bd64abaec247ccebc92e94f485670293f2625145511
154 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO link farms or phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a large number of external links. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the overall structure suggest an attempt to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7936

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
  • 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
  • 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://trafftec.ru/aws?utm_term=cara+main+brigandine+grand+edition+di+android PDF link annotation
    • https://cdn.sqhk.co/puwonereb/hezNggc/air_dribble_field_hockey.pdfIn PDF document text
    • https://xoforovujedopod.weebly.com/uploads/1/3/4/5/134587448/601bf8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381740/normal_5f8ed84ff0698.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491450/normal_5fec9735054f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374181/normal_5fb749d2cdc89.pdfIn PDF document text
    • https://vabejodero.weebly.com/uploads/1/3/4/3/134378136/gazejawegu.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/juzowilipi/carbide_formation_in_cast_iron.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/asleep_the_smiths_sheet_music_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/need_for_speed_no_limits_hack_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8d6def9-3bc5-424b-94c5-94754a496168/62820056257.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/berserk_manga_ita.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/8797108096.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/after_effect_crack_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/quantifiers_in_english_worksheets.pdfIn 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_off0000e0cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0CB 4980 bytes
SHA-256: 7338d44f1ce1433e41a83d37b9156581c7d0c874e21586654d0c9503afa31529
font_01_sfnt_off0000f19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF19C 10580 bytes
SHA-256: 7a70cf893a654b6c3668c63a2ebf17563478dc9758c7231b5a637326b1848736

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