Malicious PDF — malware analysis report

Static analysis result for SHA-256 29842384febe8216…

MALICIOUS

PDF

74.6 KB Created: 2021-04-18 12:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ae90e2785d3a9785d6b22c78e864af69 SHA-1: d7b4ac6019e9a279bd1ea2621415b4b8a925c2fe SHA-256: 29842384febe8216a36cb4403e171a773271d6137946ace684b50dd05de295a0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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://xajibur.ru/strik?utm_term=how+to+fix+a+seal+on+a+front+load+washer PDF link annotation
    • https://bowetupivivuz.weebly.com/uploads/1/3/1/4/131437724/5b6fe.pdfIn PDF document text
    • https://juwaxevepatasi.weebly.com/uploads/1/3/0/8/130874094/135237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_605aeca22a6d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383471/normal_606476100e418.pdfIn PDF document text
    • https://cdn.sqhk.co/saligoliti/7ymp1gj/xenurakubujatakonid.pdfIn PDF document text
    • https://lofusomibebez.weebly.com/uploads/1/3/2/7/132740423/2478844.pdfIn PDF document text
    • http://bukanugizini.mygamesonline.org/adobe_photoshop_lightroom_tutorial.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404727/normal_5ffd05e8a77ad.pdfIn PDF document text
    • https://balolekuzuwuvaz.weebly.com/uploads/1/3/0/7/130740598/duvimow.pdfIn PDF document text
    • https://cdn.sqhk.co/ninulekuto/jzaheig/14103122861.pdfIn PDF document text
    • https://dakusarifupufa.weebly.com/uploads/1/3/3/9/133997242/8934971.pdfIn PDF document text
    • https://cdn.sqhk.co/jinubodilev/Lurgf3R/wolf_sub_zero_customer_service_phone_number.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453105/normal_5ffc740741330.pdfIn PDF document text
    • https://nasavizar.weebly.com/uploads/1/3/5/3/135322571/d8201b803.pdfIn PDF document text
    • https://wunamixexot.weebly.com/uploads/1/3/4/4/134456109/xewaxamomi.pdfIn PDF document text
    • https://cdn.sqhk.co/waxolulum/gghiqAy/gewetinatewodomikaz.pdfIn PDF document text
    • https://xoverepidagagit.weebly.com/uploads/1/3/4/4/134469055/8dd393153dac0f.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/what_does_spectrum_code_s0900_mean.pdfIn PDF document text
    • https://xiwotedusogatif.weebly.com/uploads/1/3/0/7/130775269/9035654.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8babb32f-2323-4b4f-bf83-36b528942a20/farewell_my_lovely_en_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdc76ecb-b369-453e-97df-4146f1b3b755/canoscan_lide_220_driver_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76059629-76ff-4a3c-a4e9-c59c82ce4080/xedidobedodimiwowamidoxu.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_off0000e7ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7BA 5116 bytes
SHA-256: 988bb25cb5cd0a2c5f2d6f8b9460d5c4cf4bb8da15689e4017cfe83591556765
font_01_sfnt_off0000f92c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92C 10508 bytes
SHA-256: 335156c73dc925fbd101d02d83b382cbb55d069d15ebce42bc43aff5e0814e2a

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