Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f52c181e2078fce…

MALICIOUS

PDF

46.5 KB Created: 2020-11-06 13:02:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 12b94cf59ec491fe2b487e4c0a843692 SHA-1: 968fa98fbc7e56c0d536836f3bd2945c53caaf57 SHA-256: 7f52c181e2078fcea8402f28482ce6e59edefe5030427c9808211aea20c7014d
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous external PDF links further indicates a link farm designed for SEO manipulation or traffic redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffine.ru/strik?keyword=who+gets+the+money+genetics+worksheet+answers In PDF document text
    • https://gazitagoro.weebly.com/uploads/1/3/4/0/134016873/tovuvajovuru_novaligun_bafax.pdfIn PDF document text
    • https://bojamaluzide.weebly.com/uploads/1/3/4/2/134265872/wulukozeserulifa.pdfIn PDF document text
    • https://mivetemadika.weebly.com/uploads/1/3/4/4/134471856/bofemipotiveva.pdfIn PDF document text
    • https://pibogexo.weebly.com/uploads/1/3/4/6/134649935/3780385.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/9085543.pdfIn PDF document text
    • https://ziroluberunoreg.weebly.com/uploads/1/3/4/4/134456507/941cfc1d10240.pdfIn PDF document text
    • https://palifeselaliku.weebly.com/uploads/1/3/4/4/134441248/c95c03a.pdfIn PDF document text
    • https://wajifisawebe.weebly.com/uploads/1/3/4/4/134480175/sabijuwowuwaboz_tajaka_jekozazupabi.pdfIn PDF document text
    • https://kunizemofowirux.weebly.com/uploads/1/3/4/3/134311671/fajeberug.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/nabifovu/lesonekinurafug.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/grand_caravan_mpg.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/essential_idioms_in_english_phrasal_verbs.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/run_3_hacked_all_characters_cheats.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/alpha_project_sd.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/free_flip_book_maker_online.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_off00007604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7604 5452 bytes
SHA-256: 1972ef6118d2eb82381e5e27cea1973303ae243251e9e22300936d3d16082c64
font_01_sfnt_off00008888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 10624 bytes
SHA-256: c7cea5e40e221bc0038a642db953f02ffc5b221c1512e625658acfa1be88cbb2

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