Malicious PDF — malware analysis report

Static analysis result for SHA-256 740b14807b2ba432…

MALICIOUS

PDF

41.3 KB Created: 2020-11-05 22:57:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 53ee32004edd6c16d3f020314a18ed37 SHA-1: d2872e5acf2dd95e63f605c79e2bad09dbc55335 SHA-256: 740b14807b2ba432683107e990aaf7f3ae0886a314b51d156c8e29c36fb55597
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a clipboard-command (paste-and-run) lure. 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 1.0000

Heuristics 5

  • 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
  • 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://traffnew.ru/aws?keyword=infinitely+many+solutions+calculator PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374704/normal_5f8c467654fa6.pdfIn PDF document text
    • https://xanugobolenaz.weebly.com/uploads/1/3/4/3/134371028/6303451.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417413/normal_5f9640f9c01b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370052/normal_5f8862aa5809d.pdfIn PDF document text
    • https://lefedatit.weebly.com/uploads/1/3/0/7/130776734/vepupewu.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/878ae155-42fa-4576-a6ea-3ace2a67d147/34866389111.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3eeac98e-f026-48c1-b3db-be6cfaa75da0/zesosem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31d08d62-277b-4235-b6d8-006a19ad9b4e/loninafegu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53478aa9-b192-419f-b246-93afdcf85272/wepivenezafifurinipagidi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efe1348a-846d-4483-b836-41653c458d70/19629412790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/361caa5b-b06e-4938-ad61-2911789f9745/wowutenal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be93e581-e32d-48b5-9781-bb63ff5bca29/9045547191.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a50fdca6-f392-4389-95b6-76f991aedd36/64038869800.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_off000062e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E0 5068 bytes
SHA-256: f6b64d05bddd34955d0d8d44bad2642a8ccac26c69b6d07fbaf43cd2c85a61dc
font_01_sfnt_off00007410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7410 10728 bytes
SHA-256: fb32f04c5707bd3f3cadf0710946fc64a1024adda49b8656d4d49b64bf431b7c

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