Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ded888b7f601984…

MALICIOUS

PDF

116.3 KB Created: 2021-03-02 03:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e16c0b31412bf3cd93d300b1b6e26e6b SHA-1: c221a98a17b09c4789e458e02c2cf3f9548d8886 SHA-256: 9ded888b7f6019842d40237bca21095e299f9ae51499c8ef3d85d73eda68d51c
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, with one heuristic specifically identifying it as a 'PDF_SEO_LINK_FARM'. The primary malicious URL, 'https://botokaw.ru/award?keyword=how+to+use+spirit+items+smash+bros', is likely intended to redirect users to a malicious site. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', indicating a phishing or trojan payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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
  • 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://botokaw.ru/award?keyword=how+to+use+spirit+items+smash+bros PDF link annotation
    • http://gudokav.sportsontheweb.net/dalifegazodadit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366031/normal_5ffc4a24ad7cd.pdfIn PDF document text
    • https://zefinefan.weebly.com/uploads/1/3/2/8/132816158/1eb5b78830a4951.pdfIn PDF document text
    • https://revunisukigi.weebly.com/uploads/1/3/4/8/134849871/9484713.pdfIn PDF document text
    • https://vinipuzi.weebly.com/uploads/1/3/0/7/130776781/pafivif_deridelexi_gubitusibawuves.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490125/normal_5fd7f7ffe0949.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482027/normal_60014a30602ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403271/normal_5ff4f8e0abdd1.pdfIn PDF document text
    • https://bebefezagogu.weebly.com/uploads/1/3/4/3/134372182/bovopegobabepe_purujot.pdfIn PDF document text
    • https://xadaxiwunitari.weebly.com/uploads/1/3/0/8/130814235/1258926.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/25342845368.pdfIn PDF document text
    • https://zasevolonuto.weebly.com/uploads/1/3/5/3/135335071/2884296.pdfIn PDF document text
    • http://dojemop.mywebcommunity.org/58974284603.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422645/normal_5ff50d90603f4.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/tiluwisulepam/new_dj_songs_telugu_2019_wapwon.pdfIn PDF document text
    • http://vorisenunajix.myartsonline.com/what_is_a_mens_waist_size_30_in_womens.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/14355617483.pdfIn PDF document text
    • http://kuxoxokazutuv.myartsonline.com/cricut_wifi_wireless_adapter_for_expression_2.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18066 4996 bytes
SHA-256: 725f9870cf742643c812bf45fa218eef26d1ac871bbc03870273f91699a2723c
font_01_sfnt_off00019171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19171 10560 bytes
SHA-256: 36d1207c31c8fdc02ff9ecf3fa95be6486926c73fec92d54108e2259cb79cfd1
font_02_sfnt_off0001b54f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B54F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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