Malicious PDF — malware analysis report

Static analysis result for SHA-256 efd8de3aedc0e5ae…

MALICIOUS

PDF

69.8 KB Created: 2021-01-03 13:47:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: bcdf65f962ad0e9fa46619adfb2cfa9f SHA-1: d23a0c9a0d73093dc25d0b4da8b405f433031c79 SHA-256: efd8de3aedc0e5ae6a37a844697df2b7f5db316e5c42fc460ee29767fa85148b
164 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are likely part of a link farm designed to manipulate search engine results. The document body, though heavily obfuscated, contains text related to 'latest movies direct links', suggesting a lure for users seeking such content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafftec.ru/aws?utm_term=latest+movies+direct++links PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5f87010a57de6.pdfIn PDF document text
    • https://bujupovira.weebly.com/uploads/1/3/4/4/134472582/bejikezigami_gilomalulexabip.pdfIn PDF document text
    • https://lumodafudewose.weebly.com/uploads/1/3/4/4/134480169/7045178.pdfIn PDF document text
    • https://xigodawi.weebly.com/uploads/1/3/4/4/134464905/vewiserilolegapom.pdfIn PDF document text
    • https://jewigilimeb.weebly.com/uploads/1/3/1/4/131408849/sozuwage_vogavinama_wipitulu_wiziju.pdfIn PDF document text
    • https://rogaturo.weebly.com/uploads/1/3/1/0/131069781/lanosi.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/jiguwuzobozobaz/44182329869.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/beta_profile_ios_11.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/67870747933.pdfIn PDF document text
    • https://s3.amazonaws.com/wanalovum/phoenix_minimal_powerpoint_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/remexawinigawulejixip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cfb5c162-f137-4fc6-bd1c-5a8f6e9bb4c4/reasons_for_jesus_facebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb09e606-5144-4b57-93a4-fb26afef81b2/it_2017_full_movie_download_in_tamil.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_off0000d623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD623 5148 bytes
SHA-256: 31013eba2a16d98c23295e9fc0ed49969d28275934cd9a875d2dacb13a6e6c5f
font_01_sfnt_off0000e799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE799 10296 bytes
SHA-256: 5176a8b8259d1d14790aaf4171daa740fd82a17ac8ea6c49d5705fbe0897b864

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