Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c6cf989b575dae0…

MALICIOUS

PDF

69.6 KB Created: 2021-01-24 12:26:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 18434ccc4d0d155a4442419306aef397 SHA-1: adce06aa1938c8f43041a8294be0fd51be60e6f3 SHA-256: 4c6cf989b575dae019e93d1c0aaf9ec73c91fe6bb57efc1fc21c5a1388807e92
164 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic 'PDF_SEO_LINK_FARM' suggests the document is designed to host a large number of external links, likely for SEO manipulation or to distribute further malicious content. The presence of an embedded URI pointing to 'seumenha.ru' further supports the phishing or malicious redirection vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://seumenha.ru/123?utm_term=ge+hydrowave+washer+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448341/normal_5fde6ce24ad25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489035/normal_5fdb8b6db2e89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454544/normal_600a1f7fd6d7b.pdfIn PDF document text
    • https://gokixojegesefa.weebly.com/uploads/1/3/4/8/134864476/3faa2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489033/normal_5fc99e45bda87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410211/normal_6004e91be173e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_5fe769935c32a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470532/normal_5fc7d2e277079.pdfIn PDF document text
    • https://dojosofezi.weebly.com/uploads/1/3/5/3/135390984/ffb74ea0034.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474478/normal_5fc8c4ba7799f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405652/normal_5fe075024d329.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386609/normal_5fd2df56a9596.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384142/normal_600a7cd08b072.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481065/normal_5ff7d8f0b777f.pdfIn PDF document text
    • https://falojabuvo.weebly.com/uploads/1/3/4/7/134774067/roputomekugixegeliso.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/gowebabuxogiro/kadhal_oru_butterfly_video_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xixonu/bts_dna_mirrored_dance_practice_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/61520089945.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_off0000d398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD398 5352 bytes
SHA-256: a984570090d14817dbedb53218064356a52bfa5467fb986a2aefc5b864a7c455
font_01_sfnt_off0000e5bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BB 10544 bytes
SHA-256: f527fd896510345d49ba718a4c74650323c4ce9348687d753f793a2770093227

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