Malicious PDF — malware analysis report

Static analysis result for SHA-256 b39e0e8721022b6e…

MALICIOUS

PDF

41.3 KB Created: 2020-11-01 21:53:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: edaf5660111a43826db6ed9b2e2fb44e SHA-1: c9d9502522bfffbcab7bc36129038e542ebf5209 SHA-256: b39e0e8721022b6e73625a662b7ae3b8699e0e19099cb66f45e1ad2efdd47e41
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Winrar password remover' and includes the malicious URL. Heuristics indicate a link farm and a lure for password-protected archives, suggesting an attempt to trick users into downloading malicious software disguised as a utility.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://ttraff.link/pify?keyword=winrar+password+remover+without+software In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413126/normal_5f9e99150839e.pdfIn PDF document text
    • https://goneludolazoga.weebly.com/uploads/1/3/4/4/134488647/bosatevu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415331/normal_5f9846923cbb5.pdfIn PDF document text
    • https://xovadodelemowuz.weebly.com/uploads/1/3/1/3/131383330/a56bf365842d09.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/kavitokolezub/21242958679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9536/7585/files/360_antivirus_for_android_phone_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be61085e-80a4-45e8-8328-3d33229eb6d1/51016533251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8589/2246/files/juximonafok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bafbb7a9-ac48-45d4-9f5e-4284a64f407c/10738561702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7795/2169/files/ipad_user_guide_for_ipados_13.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/9948/5867/files/ranisi.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/12130450506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/telecharger_live_plus_pro_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1054/7099/files/totopetud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4772/1397/files/casio_digital_watch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/92699300705.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 8

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_off000060c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C3 5416 bytes
SHA-256: 293d1cd60a8c828184a020134f84a33595ea5cb9441bfc308af8271f4abc2754
font_01_sfnt_off0000731f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731F 11116 bytes
SHA-256: c4025121c1465bf624313baa6ef0ace8e7958645fb68d526646c58573293cdf9

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