Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb131592564d6f0…

MALICIOUS

PDF

102.2 KB Created: 2020-12-27 01:43:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 4243443b779ed8f7752c82a08731f408 SHA-1: 5d9e35bbcd8f14a17f0b3ebe6824bd7e33627c87 SHA-256: 5bb131592564d6f0d353701e609ad3e4606e344b1ecfdad311e4b8a7e9b69191
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. Another critical heuristic indicates a PDF link farm, suggesting SEO manipulation to distribute malicious content. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://ggtraff.ru/123?utm_term=kashimashi+girl+meets+girl+episode+1+english+dub In PDF document text
    • https://cdn.sqhk.co/nanuvoxeva/gemgifM/run_android_apps_on_windows_phone.pdfIn PDF document text
    • https://putajomarope.weebly.com/uploads/1/3/1/4/131437676/nasapipuruvug_mamawikur_vajilasaga.pdfIn PDF document text
    • https://detaxotipag.weebly.com/uploads/1/3/4/7/134730838/b6b9bd97499f.pdfIn PDF document text
    • https://cdn.sqhk.co/gozolosew/XlEmTha/vortex_cloud_gaming_apk_download_free.pdfIn PDF document text
    • https://jugizefabugej.weebly.com/uploads/1/3/4/3/134377355/748503bc4dc2058.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/meludav/67046405381.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b1e847a-81ea-4a85-8e16-418221330649/ftdx101d_manuale_italiano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b758186-9b45-41b4-9a44-3fe9c581a7ac/fexewemora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eb74991-f876-43f2-8ac5-5971f631f10b/interpreting_independent_samples_t_t.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/31495181083.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/nuance_converter_professional_8.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/macquarie_telecom_group_limited_annual_report_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/975f7038-1547-43c3-954f-98c8c8bbbc4f/55245478574.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/33d7e6c5-a968-4d7f-bce5-37d78952f0c2/nakoraxewefilute.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/81574887601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8272e632-49db-4b20-9c89-4535f446a2b5/asgard_s_wrath_vr_trainer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fedc8f3-b753-4c51-966f-b43e69f9da96/escape_jail_unblocked.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_off00012d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D23 11216 bytes
SHA-256: 961a216de53729d7e78dafe8d522a16ddcaaae32bd1fdead58a7f12219e5c540
font_01_sfnt_off0001524d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1524D 5532 bytes
SHA-256: 136265110b8d98e94965ecc31268ae1f7ed7652fd1768d2cb0283e69ea7f7975
font_02_sfnt_off000164f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164F4 11444 bytes
SHA-256: ff8a06c64704e40045ebd759b81212bd2adb68102a7b1a94bc2a335836c0dcbf

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