Malicious PDF — malware analysis report

Static analysis result for SHA-256 faddd84a46e8cb04…

MALICIOUS

PDF

84.2 KB Created: 2021-03-24 11:29:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f81417b78794b0b58e320163156991e6 SHA-1: 2749aff35723f3bea49a10245385d20632ab89fc SHA-256: faddd84a46e8cb04f5d1c95f5ac44541b9a0311ae4dd0de9b135061826afcfd4
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document exhibits multiple indicators of malicious intent, including a high ML classifier score and ClamAV detection as a phishing trojan. The document body, though heavily obfuscated, contains references to 'Call of duty xbox one digital download', suggesting a lure for a fake download. The presence of numerous external URIs, many hosted on disposable domains, further supports a phishing or malware distribution scheme. The document likely attempts to trick users into downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?utm_term=call+of+duty+xbox+one+digital+download PDF link annotation
    • http://manthoughtswebsite.website/81296311881ntgib.pdfIn PDF document text
    • http://thestablestl.com/74951159191c2jan.pdfIn PDF document text
    • https://rotarivinevi.weebly.com/uploads/1/3/4/5/134599250/4446656.pdfIn PDF document text
    • https://vebodejivab.weebly.com/uploads/1/3/2/3/132302978/4264018.pdfIn PDF document text
    • http://leomannapov.com/hewlett-packard_hp_elitedesk_800_g1_sff_driversnfx8i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454807/normal_5fd973b85d638.pdfIn PDF document text
    • http://claire-irk.ru/717556728126k04c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470967/normal_5fef393087678.pdfIn PDF document text
    • https://sofusosixep.weebly.com/uploads/1/3/4/4/134493363/lixaronadere.pdfIn PDF document text
    • http://ttop-shop.com/65245727202qs3ky.pdfIn PDF document text
    • http://stikc.xyz/lol_10.8_pbe_patch_notesmasgs.pdfIn PDF document text
    • http://mebelintera.ru/dell_latitude_e6530_specsb19vo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392667/normal_6032bd2d4b61f.pdfIn PDF document text
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/3051526.pdfIn PDF document text
    • http://arevakar-travel.com/how_to_fix_a_hard_drive_that_cannot_be_read00rhy.pdfIn PDF document text
    • http://udilische.club/391425589922w0m7.pdfIn PDF document text
    • http://winoorama.space/how_do_i_factory_reset_my_portaljkaab.pdfIn PDF document text
    • http://salearea.pro/256441026409a7q5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419002/normal_5fcbb3a066349.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_6044926149bc2.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
    • https://34570882-574e-4d25-8c0e-d8b9b6c2967f.filesusr.com/ugd/cb2bed_051f02a500bb42d5969636ba35ccc4b2.pdf?index=trueIn PDF document text
    • https://3bcdeb60-9876-4d14-bc0a-1dd1632c647c.filesusr.com/ugd/16a96a_b47973de35fe4ae484913a9d751175da.pdf?index=trueIn PDF document text
    • https://34184745-b1ec-4725-b105-60c94cc90871.filesusr.com/ugd/63369f_7f01d327f7874bc5b6c420249272378b.pdf?index=trueIn PDF document text
    • https://1ac5d900-0c69-4f12-8b1d-4e209472b8d2.filesusr.com/ugd/828753_e902fd6deec6484f9b08d4a2c11db443.pdf?index=trueIn PDF document text
    • https://044ec7df-721b-4788-b209-87474a3fcb06.filesusr.com/ugd/60ffa2_ae77c740c6da4311b07520332b8c3c20.pdf?index=trueIn 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_off0000f9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9AB 5108 bytes
SHA-256: cbf6872d0ff46555758ca2ef8390a77b336de46c3561e758c528dac5dc2570c7
font_01_sfnt_off00010b42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B42 12528 bytes
SHA-256: 7cadbaeff418b80cc561d4610550d8966a3aaf624f70d0ee6c37176ab9555ea0
font_02_sfnt_off00013472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13472 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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