Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bed3edd13a1f254…

MALICIOUS

PDF

73.3 KB Created: 2021-06-09 20:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7b9b2c8ce64bf61294ae56adb6c6c53e SHA-1: 11799e66e3b7b931a447246974827f7d18182fb8 SHA-256: 9bed3edd13a1f25409f30b107ac04a37b61bac596961618db0e420a0e8971dfb
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://krisoc.ru/pbw?utm_term=the+guy+game+ps2+iso PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481528/normal_6068cc0e2f2e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366662/normal_606255cb1dbdc.pdfIn PDF document text
    • https://sapoluwit.weebly.com/uploads/1/3/4/4/134400990/e0d24b4dd51bb1b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464996/normal_60088f9b4797f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_600d169d8d00e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445737/normal_5fd1b4f86101c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417308/normal_601f3fc6acbc9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369313/normal_5feea08f668cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477401/normal_60bbdf5af0051.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474719/normal_5ff662aa2fb4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451949/normal_5fdb20ad9a6d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459917/normal_60153f2b511ab.pdfIn PDF document text
    • https://genukuxuda.weebly.com/uploads/1/3/5/3/135390703/5fe0033e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/148aedad-1dad-471e-96c2-8184af4a8db3/38228755972.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a4b147c-419d-4060-8620-9db1461ec479/kidowo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1214278-6fa1-4239-94b7-383ce9b10669/newitonep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60512250-c45b-4a86-9973-aaa7606c66ad/anaconda_python_download_windows_7_32_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebc98ffd-b857-461e-90ce-82a56f93c2ae/their_eyes_were_watching_god_chapter_17_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b11b20f-8a5e-4a80-acea-5bc89f284136/echo_gt_225_head_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5fd86b6-99f1-4956-b6ba-e0945a861464/where_rainbows_end_sequel.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

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D8 5288 bytes
SHA-256: 782489cdf3ef75bb3c45f50939acb8316a73ff53269fefdfd4a3a64727bf38c0
font_01_sfnt_off0000f3c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C1 10584 bytes
SHA-256: aa066d2b0a57865a5d0851847061295c7de005afb5f84703c59173d8f70caab2

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