Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eeef75af180cdb2…

MALICIOUS

PDF

79.3 KB Created: 2021-02-15 08:41:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 19d21709aa1c25ce6faefcff268da185 SHA-1: 306344d24f0b430d6048fc272243aeaf59707ee7 SHA-256: 5eeef75af180cdb2f0a003fc6f2052e9ba68f75c74dd0d22919c9332f273cf5d
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one prominent URL pointing to a suspicious domain ('maypoin.ru') that is flagged as external. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, appears to be a lure related to prayer, suggesting a phishing or social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=oracion+de+perdon+y+arrepentimiento+a+dios PDF link annotation
    • http://com-signto5.xyz/bolshevism_the_road_to_revolutionk1ek3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402504/normal_6013beb9bd728.pdfIn PDF document text
    • http://mobile-media.moscow/online_java_program_formatterdjdm1.pdfIn PDF document text
    • http://arm-watch1.club/tepijisenexokubutoxoruf3cwp9.pdfIn PDF document text
    • https://xopisamu.weebly.com/uploads/1/3/0/7/130776659/vomusilaju.pdfIn PDF document text
    • http://itagreen.fun/nijajarupekupasecek33.pdfIn PDF document text
    • http://fresh-ita.space/437213208823op31.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496378/normal_5feec6883fdef.pdfIn PDF document text
    • http://shoop-fl.ru/vsphere_client_5._5_freeikb38.pdfIn PDF document text
    • https://mimuromujalu.weebly.com/uploads/1/3/0/7/130739347/7195393.pdfIn PDF document text
    • https://muboxofibadufus.weebly.com/uploads/1/3/4/3/134310828/d3d1573d1.pdfIn PDF document text
    • http://onlinekartiadesi.com/disigabonopanukanadrf64.pdfIn PDF document text
    • https://tigopovon.weebly.com/uploads/1/3/4/2/134235173/wepit.pdfIn PDF document text
    • http://ontrade.top/vazemitosivusateou6oh.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vigonodiso.rf.gd/43814905632.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/boonk_gang_stealing_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/perimibadaxa.pdfIn PDF document text
    • http://tobesonev.rf.gd/73563880883.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/15771856264.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/burupa.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_off0000ea09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA09 5104 bytes
SHA-256: 6ac266c0425fb1bed0f19c5c2ba2c0f2048a739a1368b3928b3fc53c297265f0
font_01_sfnt_off0000fb4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4B 11324 bytes
SHA-256: e0448c3e6c12aefcb7e990e82f3bec26e9f042f07545dc6be3289b1723025dce
font_02_sfnt_off0001200d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200D 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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