Malicious PDF — malware analysis report

Static analysis result for SHA-256 096ee77c732e94e0…

MALICIOUS

PDF

71.7 KB Created: 2021-01-30 04:54:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8ece4a90527fe9121fe0f6347db8d7a6 SHA-1: 7f707208a1d38070b8d940fc835b947d0fc16bd4 SHA-256: 096ee77c732e94e0cf495385324c9688b9e653d03b934ebcc05e31877535530c
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are to benign-looking PDF files, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the presence of numerous external URIs points towards a malicious document designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/aws?utm_term=kennebec+river+flow+report PDF link annotation
    • https://puroporutenes.weebly.com/uploads/1/3/1/6/131606954/balim-mepawagagi-xidosej.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/u5oifhb/fisheyevideo_free_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/i6ePnij/dolad.pdfIn PDF document text
    • https://gonufefimexej.weebly.com/uploads/1/3/4/8/134892828/5027964.pdfIn PDF document text
    • https://gunobapeve.weebly.com/uploads/1/3/4/7/134706327/lurid-xazefide-xulakovan-lokenarulujot.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/suxiweke/cps_online_report.pdfIn PDF document text
    • http://xabasib.rf.gd/chopin_nocturne_c_sharp_minor_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/h_pylori_guidelines.pdfIn PDF document text
    • http://soxosodazafu.epizy.com/67089945449.pdfIn PDF document text
    • http://lavodusepigixu.rf.gd/vunikon.pdfIn PDF document text
    • http://jiporiri.rf.gd/jolly_phonics_activity_book_1.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/pudetadenobuledafoma.pdfIn PDF document text
    • http://vimadetuvawese.rf.gd/pdf_to_autocad_converter_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/stranded_deep_map_editor_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/78023441520.pdfIn PDF document text
    • http://bogibil.rf.gd/wumarudelagukux.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/baby_crying_sound_effect_free.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_off0000da98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA98 4884 bytes
SHA-256: 06586a2a5723704b757bc633271ec72ada7bdd32184e0ad34b0ece13baa80aa9
font_01_sfnt_off0000eb5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB5F 11328 bytes
SHA-256: a9127bbe879da385271a785606d2bcc1b05ae1c404534e8e8cacb8f8596bcd74

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