Malicious PDF — malware analysis report

Static analysis result for SHA-256 abba6ccb187f2046…

MALICIOUS

PDF

74.7 KB Created: 2020-12-18 04:51:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: da4ac772facdae6d7e29785b5daf52a9 SHA-1: d025a691e37088d1d25554c2d5d160a24bcde33e SHA-256: abba6ccb187f20468eaff03ecf57228ed43e91a6df3fc3cfcfb7686d3b400adf
214 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure and a PDF link farm. The presence of numerous external links suggests an attempt to direct users to potentially harmful websites. While no scripts were extracted, the PDF structure itself facilitates these malicious redirects.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=legend+%2528lu+novel%2529+genre In PDF document text
    • https://mevamakokuvafas.weebly.com/uploads/1/3/4/0/134040887/8478545.pdfIn PDF document text
    • https://zenovoruzunej.weebly.com/uploads/1/3/4/3/134339910/turumetaparuxu.pdfIn PDF document text
    • https://boxagotogod.weebly.com/uploads/1/3/4/4/134491964/e8f6a1c2e.pdfIn PDF document text
    • https://jimitorivav.weebly.com/uploads/1/3/4/8/134878901/sufawewomesobo_fonaxewegum_lexub_jemomoxunugaba.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/tetazino/metodo_arban_trumpet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb75d4d6-4ce8-456f-b1fc-626a42189136/water_stone_oras_route_106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36c12729-a19b-40b7-b634-0f8d415cec87/storm_the_house_2_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/35376136834.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/defoti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/374f710d-d221-4512-af75-00bef303d881/73576632267.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27d7511f6a419848fbf13/t/5fc50eb1e6d49a06bb328aec/1606749874557/how_tall_is_54_inches_in_cm.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/mathematical_thinking_d_angelo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30af6699-fafa-44b0-8d0f-870bd4255e2d/nba_live_mobile_hack_tool_apk_download_no_survey.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc13d0827a199023ab79d37/t/5fc336de5147b148049b7d90/1606629087315/non_volatile_acid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55eee2c6-6138-4124-b02d-1530e4d5eb81/mastin_tibetano_precio_en_usa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E5 4760 bytes
SHA-256: c0daf19f68dc27a6f871b2263bf9e8e8fd76c8630f22e5137d1745c77b14d056
font_01_sfnt_off0000f93e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93E 10720 bytes
SHA-256: 7e13f261123621f1441f29253656ae2465b6e32139b7dbc3cbe72e552e7a0133

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