Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30ccc53f6d00fe7…

MALICIOUS

PDF

69.7 KB Created: 2020-11-16 12:35:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 511b437ea1f069f84dcb881539ebe3ea SHA-1: 331a9b3dcd31c7140c664f4264ddd99a0970725b SHA-256: d30ccc53f6d00fe7c955f0023102938d1d71599a889a624815756afa80926bd4
212 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external websites, including a known malicious redirector. The heuristic firings indicate this is a link farm designed to redirect users to malicious infrastructure. The presence of a malicious redirector URL suggests an attempt to phish for information or deliver malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/123?utm_term=watch+tamil+bluray+movies+online+free
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/ef37de4.pdf
    • https://ritobawen.weebly.com/uploads/1/3/4/4/134486043/9909298.pdf
    • https://cdn-cms.f-static.net/uploads/4375206/normal_5fa93d781904a.pdf
    • https://ligexomapaku.weebly.com/uploads/1/3/4/3/134321337/nekiwulororujog.pdf
    • https://zilavexeredora.weebly.com/uploads/1/3/0/8/130874610/bonevuvenej-surogujefom-remudit-setikezujik.pdf
    • https://dunefofitibo.weebly.com/uploads/1/3/4/6/134608320/5207087.pdf
    • https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/mateladexoja.pdf
    • https://sekulawovow.weebly.com/uploads/1/3/4/5/134578441/tixibadi_wepovawasumima_boguxizepapal.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/41d8cc3a-c609-4006-a342-2350943803ce/30506722061.pdf
    • https://uploads.strikinglycdn.com/files/4c63ffda-e29c-4ef7-8557-7e0056b9bf29/92247343612.pdf
    • https://uploads.strikinglycdn.com/files/078c4f00-c25b-48ac-bdca-73ec6c5b0acf/their_eyes_were_watching_god_nanny_q.pdf
    • https://s3.amazonaws.com/mubefula/how_to_cite_online_harvard.pdf
    • https://uploads.strikinglycdn.com/files/dbeb4b32-5b6e-4e89-bfcc-5f1a2ba97252/small_horse_breeds.pdf
    • https://s3.amazonaws.com/vitelitubovuluj/8804472181.pdf
    • https://s3.amazonaws.com/mijedusovineti/calendar_ortodox_decembrie_2018.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010603.bin
e8dc53a9f550d71d106b8df6053ee3406a5bd837619b0a28337bbd3edd237a4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10603 5436 bytes

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