Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1353917a3e36ccc…

MALICIOUS

PDF

81.7 KB Created: 2021-01-09 11:57:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 26a803caf67f9cc0ba4464310ff0b605 SHA-1: ddf79c7052a93d9e83612f9de22bd1045959e224 SHA-256: d1353917a3e36ccc09d343d61ad139646eca729209196d2eff938657b36caf3a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru'. Additionally, a machine learning classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text that appears to be a lure, and the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffking.ru/123?utm_term=wow+heart+of+fear+entrance+location In PDF document text
    • https://static.s123-cdn-static.com/uploads/4505771/normal_5fc41c0648bfe.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/4gdgihh/buxigutafewonedix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408989/normal_5fed6fef84076.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380088/normal_5fae5167b0f91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390643/normal_5fd09e3cbb53e.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/zetubakuz/fotajasudawubupoz.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/panda_antivirus_free_full_version_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/cara_game_bakugan_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/64540877307.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/98815940735.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a90169b8-c4b4-4526-8919-081993e6260d/national_gs_cookie_weekend_and_cookie_walkabout.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD3 4896 bytes
SHA-256: 24b09e9a45aebb30518108404f8fc2710a743d547f87f9a46596be7f6bdd728e
font_01_sfnt_off0000fc90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC90 12516 bytes
SHA-256: 37cdea5ef21082c2123c43909ee481c74fe5cfbbbfa9f6aee16c06d09f1d7466
font_02_sfnt_off00012445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12445 16312 bytes
SHA-256: 975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15

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