Malicious PDF — malware analysis report

Static analysis result for SHA-256 127e8f564c567a99…

MALICIOUS

PDF

100.1 KB Created: 2021-02-22 20:42:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4e14886ae23ceb521ef63e845fa5b25c SHA-1: 055d0eeed95a6b43a07e1b00ebab2888b8fe8e02 SHA-256: 127e8f564c567a99cb835ba3dd838d941527a40af7634e6f92f1202bbf1da164
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically classified as phishing and trojan activity. The presence of numerous Weebly and other hosted PDF links suggests a coordinated effort to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=the+hunger+games+tribute+guide PDF link annotation
    • https://sidugavumudoriz.weebly.com/uploads/1/3/4/9/134902227/73ae63c3fbbfa.pdfIn PDF document text
    • https://numilobes.weebly.com/uploads/1/3/4/2/134235742/fedinugakelamosen.pdfIn PDF document text
    • https://cdn.sqhk.co/livoluxuwad/tIPjjBh/african_american_toddler_hairstyles_short_hair.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/aljeYhj/77993603088.pdfIn PDF document text
    • https://cdn.sqhk.co/gulifunanale/haUdhZZ/project_pinball_drawing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460677/normal_5fd94b2869ef5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459629/normal_5ff5239e4a5b9.pdfIn PDF document text
    • http://verifybadgesbusiness.com/chemical_reactions_balancing_equations_worksheet_answerswl597.pdfIn PDF document text
    • http://gratoramaa.space/traxxas_link_bluetooth_won_t_connectxyuh3.pdfIn PDF document text
    • https://rezilatepupegox.weebly.com/uploads/1/3/5/3/135318796/b231b9dd35.pdfIn PDF document text
    • https://verosogoteri.weebly.com/uploads/1/3/4/7/134738646/892b0f806d3ca5f.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/jhghdhc/80s_music_radio_station_dallas.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/jixeremipet/street_fighter_4_apk_data_androidgamegratisan.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/wuwodonukuleped.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/cambridge_ontario_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/56403378983.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/safativemi.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/10016283046.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/android_box_tx3_mini_pantip.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/app_netflix_per_tv_box_android.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_off000121d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121D4 13288 bytes
SHA-256: 094127c7b21df699a07d5fb8dd96a759de8978a3a9b4542c584a237012bdcc51
font_01_sfnt_off00014ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CA3 5296 bytes
SHA-256: 0306dffeec9d632d5dd56225ba2ee661e7341469fc344000fc49295e14d8159b
font_02_sfnt_off00015e77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E77 10520 bytes
SHA-256: 3e1e6b5c4698447422c41c47d326dd79726103bb8d72ff51aff321936e94aff3

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