Malicious PDF — malware analysis report

Static analysis result for SHA-256 16e3e030933e2bb0…

MALICIOUS

PDF

65.6 KB Created: 2020-08-24 11:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b62abbd9bae8b354d6003e994c4bdf4 SHA-1: cd755faed92a137ee4f90b7d09516d4d48e17d2d SHA-256: 16e3e030933e2bb0582ee0f100d23b5ce5da1513233520b24c0eb6d81e630122
254 Risk Score

Malware Insights

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

The PDF contains numerous links, with one identified as a malicious redirector. The document also includes lures related to password-protected archives and clipboard command execution, suggesting an attempt to trick the user into downloading or executing further malicious content. The presence of embedded URLs and the ML classifier's high confidence score support these findings.

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
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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.com/pify?keyword=android+sdk+emulator+free
    • http://files.allanmasseycenter.com/uploads/1/3/1/3/131380107/wipur.pdf
    • http://mebojudug.totemfoodproducts.com/uploads/1/3/1/4/131483068/tejaw.pdf
    • http://bevokob.coachchoo.com/uploads/1/3/0/9/130968961/numigobedalulov.pdf
    • http://pipan.waynemcvicker.com/uploads/1/3/1/6/131606289/514c1c7aac.pdf
    • http://files.morganmonroe.net/uploads/1/3/1/6/131606965/givirejelefe-jatepirugatal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/1887/7085/files/describing_pictures_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0439/2160/4763/files/pdf_file_reader_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/murarakaxezogixa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4930/files/adobe_reader_for_windows_32_bit.pdf
    • https://cdn.shopify.com/s/files/1/0431/6105/9477/files/binesalikaluzi.pdf
    • https://cdn.shopify.com/s/files/1/0438/9978/1275/files/zefibemeromosadex.pdf
    • https://cdn.shopify.com/s/files/1/0428/8223/6583/files/bolero_top_speed_video.pdf
    • https://cdn.shopify.com/s/files/1/0460/3576/3364/files/bourse_de_formation_au_canada_2018.pdf
    • https://cdn.shopify.com/s/files/1/0428/6670/4550/files/danganronpa_2_chiaki_report_card.pdf
    • https://cdn.shopify.com/s/files/1/0430/3909/6986/files/povipeliwuxirekifovomibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/zemebige.pdf
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/14539800426.pdf
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/a_legacy_of_spies_john_le_carre.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_off0000b7ca.bin
45771b975d79b055f9117528e73cfba9f39cb99c6b81b7cd9d4dbf9f2ab5c0b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB7CA 5108 bytes
font_01_sfnt_off0000c90c.bin
c90671dd887e8b8d4882a37bed20f11c4f6a904fbbc7d30d735c783a1ec2d61a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC90C 15664 bytes

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