Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b253ee1e1286335…

MALICIOUS

PDF

68.2 KB Created: 2021-03-23 02:53:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ffdf24b6823d15ca79f98d8651ea81d1 SHA-1: e37ff27416e73631a0b7e3de0aad1274fc9da4f0 SHA-256: 9b253ee1e128633502092ca081fe3f25f98df2708fbdaf8e2c709d5aaa117bc5
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware distribution lure. It contains numerous external links, including one to 'maypoin.ru', suggesting an attempt to redirect users to potentially harmful content. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, further supporting the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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/123?utm_term=slayer+raining+blood+drum+sheet+music PDF link annotation
    • https://bawigadumifop.weebly.com/uploads/1/3/4/4/134494387/vusitepevoki.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/putumug.pdfIn PDF document text
    • https://fimedezederuru.weebly.com/uploads/1/3/4/8/134884956/bd15a5c973076.pdfIn PDF document text
    • https://cdn.sqhk.co/xexanodu/gghgjha/huawei_game_center_apk_download.pdfIn PDF document text
    • https://fepuluji.weebly.com/uploads/1/3/4/8/134871890/gumego.pdfIn PDF document text
    • https://cdn.sqhk.co/roratumopiv/jbhgYtY/real_formula_racing_fever_2019_rivals_racing_freestyle.pdfIn PDF document text
    • http://xafopawiki.medianewsonline.com/kujagid.pdfIn PDF document text
    • https://xixusumer.weebly.com/uploads/1/3/0/8/130814933/3c73ffda.pdfIn PDF document text
    • http://tidirakozodawon.getenjoyment.net/mavisotivapuzedujoxuk.pdfIn PDF document text
    • http://zovofuti.mygamesonline.org/leadership_styles_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/e3jgicU/bolimogenenorurosipuzud.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvepelela/JHZjgdX/word_game_apps_for_ipad_free.pdfIn PDF document text
    • https://xitarowax.weebly.com/uploads/1/3/2/6/132681505/b517e53362.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dirazonun.myartsonline.com/36632438746.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/8228051664.pdfIn PDF document text
    • http://jokajejuti.atwebpages.com/analytic_philosophy_a_very_short_introduction.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/polk_magnifi_mini_home_theater_soundbar_system.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/52236417804.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/vibipoxinu.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/77750712696.pdfIn PDF document text
    • https://s3.amazonaws.com/zodawanuror/jobesusapuxexe.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/dakizog.pdfIn PDF document text
    • http://nazowovemozugiv.myartsonline.com/pobizewujazinuziwiguzat.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/98517003408.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_off0000cccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCCF 5696 bytes
SHA-256: fb13b37fe31474474d1595989bfcefd45183659c980b68e85a85f3b6ba8ad808
font_01_sfnt_off0000e010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE010 10228 bytes
SHA-256: 8c7cf27ab95084804a899dd6ee1a30371e638a8f12a05691f3f927a8ea7e39df

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