Malicious PDF — malware analysis report

Static analysis result for SHA-256 944ad0c961aaa14c…

MALICIOUS

PDF

49.3 KB Created: 2020-10-09 02:14:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3464dfbda54aecc4a82416477b33d784 SHA-1: fde265b77dfa89d3b915049ea132c1e4435ad142 SHA-256: 944ad0c961aaa14ca3bc3f1ca74ecb75c32f3932ce9a8034c28b0388cf3e7b15
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a reference to the malicious URL, suggesting an attempt to lure the user to a compromised site. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.club/pify?keyword=viridian+forest+map+let%2527s+go In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/9371/4853/files/race_for_the_double_helix_movie_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1738/6659/files/75194097164.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5449/6921/files/download_avast_pro_apk_untuk_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9512/1301/files/audi_mmi_update_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e465755-3c64-42c0-82c4-a9adafe4d331/rozibef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef904594-80fa-4899-ac68-6b41e46048d6/kafigakemek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0598a131-a19e-48c0-a243-c5068454bccf/83922995716.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/568f1f3d-49ff-4dce-a35e-b2c64fd8d949/1385106701.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b0375f2-38fc-4b6d-978e-289d69db44e2/wenodetuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/vukujexoguwesobapinamag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4515/9580/files/reset_clock_fitbit_one.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5966/9909/files/72968173573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7020/files/xanathars_guide_to_everything_pre_order_bonuses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8555521f-4b78-47a0-8038-d14ade8a2073/xivoxedafivananom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7aa84350-a86e-4867-a2ca-0a4c3c459103/58888112943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dac189dd-513d-4145-a151-41438817d884/97486673835.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a657944-0906-4ae5-b992-598948d9d63d/92332649156.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED8 5604 bytes
SHA-256: f49045f40e3932eea370dfb4b2b08233021d79f86b8b20b2a6954861d5e9ebc0
font_01_sfnt_off00008217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8217 5360 bytes
SHA-256: ce38851fcdedc7e815bb70b6988d2941052851b3030d56f79a5bf0b97112d0a5
font_02_sfnt_off00009448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9448 10372 bytes
SHA-256: c62ddf3d7776d14d180b009bdf438955b91f8415d22141cb8d244c3029219b86

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