Malicious PDF — malware analysis report

Static analysis result for SHA-256 220dafb3b7552f17…

MALICIOUS

PDF

75.9 KB Created: 2021-03-31 07:09:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e957f88f9b984e6cdf2f1f5a7aee50f0 SHA-1: b7e038f6ae892c71a8a683b9c83f30d89b954f8b SHA-256: 220dafb3b7552f175094d5972dfb61b51d4920a1ee5de69e42164070359aebcc
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of numerous external links, particularly the one pointing to 'lozipotod.ru', suggests an attempt to manipulate search engine results or redirect users to malicious content. ClamAV also detected it as Pdf.Phishing.Trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://lozipotod.ru/wix?keyword=unit+1+study+guide+answers PDF link annotation
    • http://kilibuda.22web.org/what_does_it_mean_to_be_in_charge_of_someones_sponsor.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/faxaxos/jefofagirupixazonuv.pdfIn PDF document text
    • https://7133fc40-0b9c-4701-b953-e7fafc934b44.filesusr.com/ugd/70a38d_ef67321648684d619428005c3d964f70.pdf?index=trueIn PDF document text
    • https://a3cd4400-5fdc-4e6a-bda8-88556a2d4d1f.filesusr.com/ugd/2f7489_dc54eb07071d49aaaf7a2cb07f8b5079.pdf?index=trueIn PDF document text
    • https://49550882-97ce-44db-a38b-6e383bb81149.filesusr.com/ugd/062c90_875f91c323344f168b9943d5b28abaf9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/saxon_math_grade_1_workbook.pdfIn PDF document text
    • https://a96990da-dd17-4b11-844c-aba2d588d1b6.filesusr.com/ugd/5e5e7b_fb42f98a4a7545d2b8954cea7b9b5f98.pdf?index=trueIn PDF document text
    • http://kenamumiv.rf.gd/farberware_pressure_cooker_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/37604170075.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/kerune.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f455c48-13c1-48fd-8fbc-04ee55e5ea6b/60762380462.pdfIn PDF document text
    • https://2ddc7431-ff91-46e9-9708-195efd6cc195.filesusr.com/ugd/ffe0d3_1861e9c5bfbe4c29b4d91e8759994c6c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/nevejugo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b799732f-8592-4017-bead-b42ed7329844/28172992032.pdfIn PDF document text
    • https://8c56b32b-3398-45d6-9c0b-b55146621f16.filesusr.com/ugd/6924eb_aaa94782847f4fc7b8bf46fd0d8e46c5.pdf?index=trueIn PDF document text
    • http://zoponoz.epizy.com/xijugubabiniridesi.pdfIn PDF document text
    • https://fefcf4f0-bf52-4086-adb3-b788df03f7bd.filesusr.com/ugd/da9d4c_06c9088834284910b845bfe17225efb1.pdf?index=trueIn PDF document text
    • https://f0ddeb88-3549-4a27-8821-6e3dd713f165.filesusr.com/ugd/2b74da_3aeaad287220445083ed4a8b97ac7ad9.pdf?index=trueIn PDF document text
    • https://43e3b293-20b6-4b74-9f7d-0eefffb4d2df.filesusr.com/ugd/11595e_900569aa52d74904975aeae2f84151fe.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/benuka/60501650492.pdfIn PDF document text
    • http://dumojefupu.rf.gd/weber_spirit_e-210_cover_lowes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/274fd523-c474-4906-8127-e81a4f9d47f6/what_to_wear_with_a_navy_blue_shirt.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_off0000eb68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB68 5200 bytes
SHA-256: 77f8957b776ea0bdf0215c7c22b1bc10b5c78ed563b49b4c5a001c0fcd4890fc
font_01_sfnt_off0000fd41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD41 10836 bytes
SHA-256: c387a845b91f2ed881f8ca97d8f2722895e0d4a2924fa636916bc0c846d2df6f

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