Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb6483cd992e8f45…

MALICIOUS

PDF

68.5 KB Created: 2021-03-17 22:18:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0c0d54342d6c0bb98a61669bebccfc45 SHA-1: adba20fc2edcf551f393a21bd42140ad29968f64 SHA-256: bb6483cd992e8f4515172b97a7ea361ea642679431384d35fb774757541b63b1
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The primary URL, https://golowaki.ru/award?keyword=attestations+d+h%25C3%25A9bergement+pdf, appears to be a lure for users searching for specific document types.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/award?keyword=attestations+d+h%25C3%25A9bergement+pdf PDF link annotation
    • https://cdn.sqhk.co/fidinananale/chf5jgq/suzovitekovofa.pdfIn PDF document text
    • https://cdn.sqhk.co/wujugojuse/SgjegdL/tunnel_rush_friv_2017.pdfIn PDF document text
    • https://lumigoxodavi.weebly.com/uploads/1/3/1/6/131606620/1bffcf9c8b611d.pdfIn PDF document text
    • https://cdn.sqhk.co/nodujugebi/bQhiohj/raask_short_video_app_download.pdfIn PDF document text
    • https://kebiluxo.weebly.com/uploads/1/3/1/4/131455508/4396013.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_197bd2dd0a83475fa8ef09d1763b1f66.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/wowemad.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/zevematozeba.pdfIn PDF document text
    • https://24d1f61b-f5c5-4d2f-8180-62589f44e8d8.filesusr.com/ugd/eed56f_06342c15525e4ffeab40babfea8820cb.pdf?index=trueIn PDF document text
    • https://d99d9bf7-a5e0-49f2-90ac-0d1bc881463d.filesusr.com/ugd/0182ef_96dc167991d44dabb90684a8296e5167.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/756ad1b9-16e0-46ea-b990-18568378ae09/como_hacer_amigos_e_influir_en_las_personas_epub_gratis.pdfIn PDF document text
    • https://49b7c339-fea6-4bb3-bf7b-ca47af5263df.filesusr.com/ugd/6ca12d_77870b3581f949529f98d82f80cd83f7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/megelugik/vizefakax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4cbbc74-db23-4a82-afaa-5df60b875777/z_score_table_right_tail.pdfIn PDF document text
    • https://ce5d016b-e5fb-4004-af8f-35f61b829e22.filesusr.com/ugd/d7d7f8_5c2e5a198cba4cca82f4ab6a28eab07f.pdf?index=trueIn PDF document text
    • https://0a497e50-07dd-462d-832d-d8678f741a8e.filesusr.com/ugd/5f857b_9d0cfb9e95224acb986d71466b78e8a9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7a18bff-fe94-4afb-9b70-0ac87539498a/wanapibagovinowofeza.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_off0000cab2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB2 5692 bytes
SHA-256: d77b66714d2e4cfc34f255234e1c5389c7c9dec2b7c851b9822483b339070776
font_01_sfnt_off0000dd9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9C 11668 bytes
SHA-256: 7070ca455a7b92d39fedf526085b9a91d8ad23f0f0356feafb9426264a30cd5a

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