Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68eac150b84bd3c…

MALICIOUS

PDF

64.9 KB Created: 2020-12-20 18:33:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 49259bf9655db3079b4240300ec83121 SHA-1: e6c3bbeed4bd6a51b18cc89fec339c5f338edcfd SHA-256: d68eac150b84bd3c5e704e543398a46a0db226dae3d82486c09b27b8a7c100c4
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain associated with phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded links suggests an attempt to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://trafffe.ru/123?utm_term=hay+nham+mat+khi+anh+den+vietsub PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464065/normal_5fa794be0fccc.pdfIn PDF document text
    • https://janazasifopuno.weebly.com/uploads/1/3/4/4/134437996/vutuxuranefub-nolena.pdfIn PDF document text
    • https://xakuwije.weebly.com/uploads/1/3/4/3/134340554/fojigokolobuja.pdfIn PDF document text
    • https://xizidalubatud.weebly.com/uploads/1/3/4/5/134583516/8177988.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a9ec53d-2adf-452c-bf34-70c2f9d5b3ca/heathers_streaming_vf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e692fcca-9d29-4208-a600-f07ba30c344a/45685865098.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/lagu_lirik_beruntungnya_aku_dimiliki_kamu.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/new_bollywood_romantic_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/891ffafe-c64e-4692-b47a-bc4723ddd550/hungry_shark_oyun_hilesi.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/assassin_s_creed_odyssey_walkthrough.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/free_context_clues_worksheets_3rd_grade.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b19b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB19B 4468 bytes
SHA-256: 81c5e444d8c871f7171386830fdc1ae9ba4402bbf5f07c6c8d0a6f65b261bb1f
font_01_sfnt_off0000c148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC148 5264 bytes
SHA-256: c6ac6982193636ddf302dfa3cf25b68880af987c3e51ce1e324399b05525f161
font_02_sfnt_off0000d311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD311 10468 bytes
SHA-256: b784b0ba5a139e73b084922eb67f079054172cdfd04ab638cc3fb2f080a3d447

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