Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2adae2480b269bf…

MALICIOUS

PDF

79.9 KB Created: 2021-03-16 23:28:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 6d688e7b1b2bccb8664b31ecfe292291 SHA-1: cb16e81c1c953ab9614e97db8d06441333a8d372 SHA-256: d2adae2480b269bf26894d279a05a7da1d0047fa48d55b2927ac1ae86f4d73df
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL suggesting a lure for downloading software. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://maypoin.ru/wix?keyword=adobe+flash+player+android+apk+2019 PDF link annotation
    • https://ludilejufa.weebly.com/uploads/1/3/5/3/135347725/vanuz.pdfIn PDF document text
    • https://baxorejo.weebly.com/uploads/1/3/5/2/135295822/ccbfab731.pdfIn PDF document text
    • https://paxogusav.weebly.com/uploads/1/3/4/0/134040839/6383711.pdfIn PDF document text
    • https://bobujiwa.weebly.com/uploads/1/3/1/0/131070874/banugimumo.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/gupuviwidivoves_juronita_motoba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_c28b50fc24f645379beb898bbaa37305.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/xuwamekupiseg.pdfIn PDF document text
    • https://9f349447-249b-4747-956a-316fe86e371b.filesusr.com/ugd/d2b720_cad41749ddc1442eaf793a026fa5fc04.pdf?index=trueIn PDF document text
    • https://dcc20dec-0195-4543-b617-cfb82efd15f0.filesusr.com/ugd/30ea26_369cfc11958c4d49a55a8a77e7f72c33.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d852ec99-7473-45e7-9c57-3c3a30a3a770/89251200477.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/what_is_the_difference_between_single_phase_and_three_phase_power_supply.pdfIn PDF document text
    • https://b3079848-b07e-4d89-9244-05dfa5dd91fe.filesusr.com/ugd/3ab5ed_329f6c81ab9f4ce18dd6260a65bf71ce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zaxefemebidaz/computer_basics_worksheet_section_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89e36415-1c3b-4135-bcda-b0846e41fc09/macbook_pro_tutorial_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/present_simple_test_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nitizobuv/vutafaxunugu.pdfIn PDF document text
    • https://ca3ec1ac-6ff7-4c8f-ae0f-86a30d86e335.filesusr.com/ugd/3615fb_ef3f8f8f03764c75b845f332518d9fe3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/093f4451-4d4e-47b3-a70c-8683487bde61/how_many_hours_is_full_time_at_disney_world.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/muzevanedus.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/34396591611.pdfIn PDF document text
    • https://9e2b3e3a-6a02-4d3b-8ba9-5acc01041672.filesusr.com/ugd/66c878_d27e37be4b1a4f16a97287e546cc9ac7.pdf?index=trueIn 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_off0000f847.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF847 5904 bytes
SHA-256: 93dd8f698e3f48bb87b1d125bdb60e41f972679ee036a84b7fd0c0519f44cedb
font_01_sfnt_off00010c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C5D 11084 bytes
SHA-256: 14291bb4eaa8c206d9300a3ec38c371595357070043687897eef30e792a92747

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