Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba7ede610603be10…

MALICIOUS

PDF

79.3 KB Created: 2021-03-22 07:45:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b6a365e29ba6666afac83b5b19115391 SHA-1: 5c2efeaec7ddd26ebf6dcc426df67f8a5f5114d1 SHA-256: ba7ede610603be1036efd9a7894214b412e2e8afd3904ba604ec08d7b624b723
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting, indicating a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were extracted, the embedded URLs and the nature of the link farm suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://lozipotod.ru/123?utm_term=missing+camera+icon+on+my+android PDF link annotation
    • http://gamowenugeg.sportsontheweb.net/janobesemok.pdfIn PDF document text
    • https://cdn.sqhk.co/zanemulazif/5ehf7ha/gofuzizotejoxofaj.pdfIn PDF document text
    • https://cdn.sqhk.co/kezomerameki/hffsyFC/emergency_alert_message_android.pdfIn PDF document text
    • https://cdn.sqhk.co/vomemubevu/lDichcD/89146481048.pdfIn PDF document text
    • http://sumapewub.getenjoyment.net/bovozebegorosusebizi.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/iOm3Zid/2020_football_recruiting_rankings_players.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://883cd1dc-02d0-4059-8fa2-99201f92b631.filesusr.com/ugd/6166c9_23dcd751da5f4de989a05a700a41cedb.pdf?index=trueIn PDF document text
    • https://90ff81fc-98d9-4e53-96a3-aaa5c1c2042e.filesusr.com/ugd/bb5aff_7a3a8b2b83c6419ca09a9c4c93687246.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/50cda839-322f-4660-978a-2430604f90cb/30_under_30_awards_2020.pdfIn PDF document text
    • https://cccd2283-d272-450a-840b-6541230ebad2.filesusr.com/ugd/5de1df_403451e82361434c92b3ffad9dbb7097.pdf?index=trueIn PDF document text
    • https://9cf93ecd-64ee-4ad6-afcc-f350577a7522.filesusr.com/ugd/c4dbd3_92e2ea1adaa145d99b3df70cb50c5002.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/104e9dca-7086-4b06-886e-67a4bd409118/how_to_build_a_blog_for_dummies.pdfIn PDF document text
    • https://bf808793-8b46-4c54-8b11-319763181fa0.filesusr.com/ugd/0d018b_0ad6f7ac703c4e9c838d3047e1b9460f.pdf?index=trueIn PDF document text
    • https://77701ba7-c5ad-4750-ab17-5b03548f7fc0.filesusr.com/ugd/9a242c_00b3e6bf905a41a1a947c38066008f60.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8615dfb-1d66-4e1c-b690-bd712f213877/36914431306.pdfIn PDF document text
    • https://2efabd41-1f95-43d0-8245-5f8eb9267247.filesusr.com/ugd/2f4ddf_48c8a840547545808738da00283c7a47.pdf?index=trueIn PDF document text
    • https://3c4962d9-41f7-4f14-8396-dad57cc8de20.filesusr.com/ugd/a2de88_eab25aafed3c4382a79003f5a9fbeb70.pdf?index=trueIn PDF document text
    • https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_18d60d3abb8e4fe2961681021c4cb485.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/10a14362-5744-4c74-bdd9-d000970c6218/62020405052.pdfIn PDF document text
    • https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_30154fe231a64caf8f9f83c0a15bcf52.pdf?index=trueIn PDF document text
    • https://54179944-c6a3-49b3-9462-5d1939b6aff2.filesusr.com/ugd/49f5ef_c84afc937f6d4cbab0bd72b5fd2335a5.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_off0000eb42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB42 5040 bytes
SHA-256: 0cab9396a70d12064bde269cd4ab12fb55a3d9618515187bf8482da88dac0bae
font_01_sfnt_off0000fc40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC40 11032 bytes
SHA-256: c7935ee989e7035cf7f5bf25f535c96f672065facffdad033b9b3df52ccf786c
font_02_sfnt_off000121e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121E3 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.