Malicious PDF — malware analysis report

Static analysis result for SHA-256 a116ca335161b0ec…

MALICIOUS

PDF

67.9 KB Created: 2021-03-23 02:40:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cbf2fbdc02c95ef7bd16109b24cdf36f SHA-1: a77eba7b0d516a8a710720b7ac7acf1e990015fe SHA-256: a116ca335161b0ec3baeed1acb59dd3845adea8ec2a67485c0690f85c78c06b5
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, with a specific detection name indicating it is a phishing trojan. The embedded URL `https://jumiwimov.ru/wix?keyword=qwop+unblocked+66` strongly suggests a phishing or malware distribution attempt, disguised by the document title.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jumiwimov.ru/wix?keyword=qwop+unblocked+66
    • https://cdn-cms.f-static.net/uploads/4393785/normal_603b513837b2d.pdf
    • https://cdn.sqhk.co/mivijigonof/jehcics/20799286681.pdf
    • https://static.s123-cdn-static.com/uploads/4392453/normal_5fca591c5f674.pdf
    • http://centerverifybadge.com/10692582745h7355.pdf
    • https://cdn-cms.f-static.net/uploads/4461786/normal_5fd70b8a09b6c.pdf
    • https://cdn-cms.f-static.net/uploads/4374851/normal_604bcc60c0352.pdf
    • https://cdn.sqhk.co/nejajevafode/jebgguI/samsung_a50_email_notification_sound.pdf
    • https://cdn-cms.f-static.net/uploads/4403960/normal_5fd83243e332d.pdf
    • https://cdn-cms.f-static.net/uploads/4403687/normal_60338697303b1.pdf
    • https://cdn-cms.f-static.net/uploads/4393521/normal_6022555258962.pdf
    • https://cdn-cms.f-static.net/uploads/4368732/normal_604703fee848c.pdf
    • https://cdn-cms.f-static.net/uploads/4448113/normal_5fe7ddd0ce060.pdf
    • http://matcobzor.ru/best_research_paper_topics_2020257ox.pdf
    • https://static.s123-cdn-static.com/uploads/4530151/normal_5fdf71a23bc10.pdf
    • https://cdn.sqhk.co/xafeperale/Sjeijjc/98450689764.pdf
    • https://cdn-cms.f-static.net/uploads/4485579/normal_5fd9dc0c17475.pdf
    • https://static.s123-cdn-static.com/uploads/4384325/normal_60028379f2f55.pdf
    • https://static.s123-cdn-static.com/uploads/4448727/normal_5fec99e6dabdf.pdf
    • https://cdn-cms.f-static.net/uploads/4404755/normal_5fe7d2b462d3b.pdf
    • https://cdn-cms.f-static.net/uploads/4451970/normal_6036192841611.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3a498996-ca88-4cbb-9926-460c50630715/sharp_inverter_air_conditioner_instructions.pdf
    • https://uploads.strikinglycdn.com/files/d0cdc8b0-61b6-4093-9530-4d3d708ec1cd/sanokabogiko.pdf
    • https://uploads.strikinglycdn.com/files/5427bb7c-9d01-4af2-a77a-a0654624ffe6/lupajetiloridiginubotot.pdf
    • https://uploads.strikinglycdn.com/files/ca1980f3-d61a-4900-9fd7-bad1e8217eef/3103498652.pdf
    • https://uploads.strikinglycdn.com/files/047129a9-e8c9-4471-be11-73384999adc3/sepowibelumopasunakiwarev.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cec1.bin
b2bac9c4da197d1ff3b7c678f66c698cdee7a8f8daa966db158b5499fe140868
pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC1 5096 bytes
font_01_sfnt_off0000e038.bin
405941c92f61626c375c799f87d9b8c6acb15d816862f098441c95246ad1c49f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE038 10104 bytes