Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe229b19d27571d…

MALICIOUS

PDF

76.6 KB Created: 2021-04-01 07:26:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 834a36fe422174af57aec6ffd68aabb5 SHA-1: 22a1d986852818a92d66575ccc02f598510ae274 SHA-256: dbe229b19d27571da2aabc3b45d733633ddd3c9abc7af2a1265dccdc9c0ea0b9
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a technique often used to redirect users to malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/award?keyword=three+billy+goats+gruff+printables+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454965/normal_6036634d00eb0.pdfIn PDF document text
    • http://vehicleusains.com/sotifuivumb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386829/normal_6018232992ab2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488316/normal_603ceb2257956.pdfIn PDF document text
    • https://mesirurot.weebly.com/uploads/1/3/4/7/134706751/9da963.pdfIn PDF document text
    • https://zumugerajezu.weebly.com/uploads/1/3/1/1/131163828/dibefat.pdfIn PDF document text
    • http://3bureaureport.info/60682487035nmq8x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460708/normal_5fe2d65099b8d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ce099f17-eb12-430b-a452-8d789b3ee5a8.filesusr.com/ugd/aef5b7_c304f23e0b284ee89dac24ea887b8203.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kovilowab/54361058399.pdfIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_35e9e50068514c9582db0d5f6d488246.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/chumki_lagao_kacha_sari_santali_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tarizirefevifab/leg_rope_length_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/1554075530.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/sekepid.pdfIn PDF document text
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_7ced9c5896c8403eaafdd36e189e8fe3.pdf?index=trueIn PDF document text
    • https://2e6726a7-2e78-456a-9fa1-8bc85c3b20a6.filesusr.com/ugd/76e31d_afced305a17641a194bef15df6c242ec.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/breville_oracle_touch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/qu_significa_tener_ministerio.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/98898848299.pdfIn PDF document text
    • https://27a83426-c768-4525-a63d-b5b732cca755.filesusr.com/ugd/28b3f7_0187056f9abf42829674ffed02a259c9.pdf?index=trueIn 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_off0000eaa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA8 5492 bytes
SHA-256: 95a46ba7af1824a5e585eb2481bfac2c8a4184820d716248a1341495aa463be8
font_01_sfnt_off0000fd56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD56 11108 bytes
SHA-256: 46812ae562e3ffa4c4cfdefa9482a14911c0c23b3312bedb63fd9a921fd40b84

Open this report in the interactive analyzer, or submit your own file for analysis.