Malicious PDF — malware analysis report

Static analysis result for SHA-256 fabceb28537227e3…

MALICIOUS

PDF

85.5 KB Created: 2020-12-15 15:47:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b80a523cc749d98c1e47392cccc142d5 SHA-1: 7aef53248551dc59f5b04abbcd4ef1ebbee3064b SHA-256: fabceb28537227e3a899ea223bff843970898a9a9bd102760394a00cf68de34e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that leads to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to 'breeding guide for dragon story', aligning with the malicious URL's UTM parameter.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffnew.ru/123?utm_term=breeding+guide+for+dragon+story PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453335/normal_5fa0ad46a8ccd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471475/normal_5fbcc7aad6c9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373778/normal_5f8bb36c8420e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5f8a1681ab777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f877df933f0f.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
    • https://s3.amazonaws.com/zuponefi/energy_and_kinetic_molecular_theory_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/hawaiian_airlines_carry_on_guidelines.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56edf60f2895dc106537a/t/5fd153c76427d128dbd1206c/1607553991810/sibofududilonutiru.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cbc7c6d964583621a279/t/5fc1962561e25426e17405f6/1606522410680/dadovufufodef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49d44230-e767-4831-bf57-3c5aab38b547/pozavutofukepuw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc575ad2bbd740658254770/t/5fd1552687bef85997dd7623/1607554343154/dominos_coupon_codes_march_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0052111f6a4198480c96b/t/5fc10a773570fb44d12817b6/1606486648347/sitazajanusojedut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee988c3c-fcb2-4f7a-b7f0-65d5d2777a0f/81087309118.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf3801a633b27d3ae764fe/t/5fd0459db8bf0379e6059faf/1607484829076/dwts_2020_elimination_week_5.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dde4403f5353fd9590af/t/5fc1735f3c02f22b9d43dc68/1606513504744/jusapeturetorusur.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCD 5076 bytes
SHA-256: b81eb3ebf1eef5061b463d4609812d83f2b516d560ef0225bebdcdd866dc0f00
font_01_sfnt_off0000ff28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF28 11796 bytes
SHA-256: b74ab75170ac46b44bd73023038153494ff79c5b78197672876a2367e04b11b3
font_02_sfnt_off00012532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12532 16312 bytes
SHA-256: 531e37f64a2e7dc3bfb257675d9e6c644c7b1597f33ba9a969cd005a7ed65660
font_03_sfnt_off00013abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ABD 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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