Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a722df2ab476fa…

MALICIOUS

PDF

70.9 KB Created: 2021-02-18 05:01:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 38aa65cd19430cee316cb72f9124faea SHA-1: 4ea20cfb687d1c7a0c389913771ae8d22ef93c3b SHA-256: e2a722df2ab476fa52831181c4ca75de123e2bd3d9ea5b28bd43c09556821543
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document was flagged by multiple heuristics, including ML classifiers and ClamAV, for being a credential phishing lure impersonating Apple. It contains embedded URLs that lead to redirectors, ultimately pointing to a malicious PDF hosted on weebly.com, which is likely intended to steal user credentials. The presence of external URIs and the nature of the phishing lure suggest an attempt to exploit users via a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://jekotufuwin.weebly.com/uploads/1/3/1/4/131406020/zutamemuwuxegazuze.pdf.
  • 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://leonvi.ru/wix?keyword=is+fortnite+epic+account+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378383/normal_5fdd166764c54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453902/normal_5fd7a17f6927b.pdfIn PDF document text
    • https://jekotufuwin.weebly.com/uploads/1/3/1/4/131406020/zutamemuwuxegazuze.pdfIn PDF document text
    • https://jeduwenerapowi.weebly.com/uploads/1/3/4/6/134678879/juguniliwem-fejoxagiwem.pdfIn PDF document text
    • https://nepuvojikonutoz.weebly.com/uploads/1/3/4/6/134677469/genubozi-dujofubaf-kakadasodu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470825/normal_601a9a1420e20.pdfIn PDF document text
    • https://rafunipigadim.weebly.com/uploads/1/3/1/3/131380466/fufuzu-jerakoju-tuvejajivik-mujivilo.pdfIn PDF document text
    • https://fogufufizanalu.weebly.com/uploads/1/3/0/8/130813948/wonunirok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420599/normal_5fe0330563955.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378378/normal_5fda6e28ae968.pdfIn PDF document text
    • https://folenepawesig.weebly.com/uploads/1/3/2/6/132680852/6771461.pdfIn PDF document text
    • https://judunuxazivu.weebly.com/uploads/1/3/1/4/131453245/bolenul-kuketax-kukodu.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/jedaxopopuko/69943575045.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/mepefepox.pdfIn PDF document text
    • https://s3.amazonaws.com/kubedukowug/78783182571.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/7059454262.pdfIn PDF document text
    • https://s3.amazonaws.com/tokatefozude/54235578298.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/chakravyuha_kannada_full_movie_hd_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_off0000d7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FD 4916 bytes
SHA-256: b38ba20a0a11fb4f87cb8b2d0dc766c2cb1a8bdb391eefe44e7ceac799c7e94f
font_01_sfnt_off0000e8c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C5 11080 bytes
SHA-256: 9896c2b1840baa81f4e6ec374e319f6c42c00062066d0e26a8515effd64c0bc5

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