Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e1d78237a46c887…

MALICIOUS

PDF

73.9 KB Created: 2020-12-26 16:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 23e5f73e1f727c0086ae70e6a3216a76 SHA-1: 1d305166746571da5376abe0403097ecb590c1d1 SHA-256: 3e1d78237a46c887be42c501c24f017fa3d63e645b55b6fe2e499496255247e1
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and ML classifiers indicated a high probability of maliciousness. The document body contains text related to a game mod, suggesting a lure for users seeking such content. The embedded URL points to a redirector, likely leading to a phishing page or a malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafficel.ru/strik?utm_term=rope+frog+ninja+hero+mod+apk+an1 PDF link annotation
    • https://dibozavo.weebly.com/uploads/1/3/4/5/134501923/8db60dbe02.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470979/normal_5fa8b592e97e5.pdfIn PDF document text
    • https://kuxunudizovisaj.weebly.com/uploads/1/3/4/3/134321976/bewevariwemefa-mobisugo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407795/normal_5fbe739664277.pdfIn PDF document text
    • https://tilobumofiraji.weebly.com/uploads/1/3/4/4/134492377/f1f815c481422f.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/wibadinavosunom/crowdstrike_overwatch_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c154c77-a4cf-486e-ac3b-07bdce7d771f/17403933383.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/pathfinder_slayer_talents.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2b56705-1886-485a-916e-e0f719059055/rokosebiron.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/43604732688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6d8c4b7-1f13-48d0-bea1-2fd46c82d986/gold_weight_dnd_5e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aa2af76-b715-4463-b1f7-07a6710e70b0/the_sign_of_the_chrysanthemum.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/bokikejekepamugire.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c994.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC994 5444 bytes
SHA-256: c209f4996f8f1def8f81c5cfb4a4a7da650e1671cb5a32838afb1294bbb7d05f
font_01_sfnt_off0000dc01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC01 12340 bytes
SHA-256: 20f3e0b1fa1c96cf69adc67f0214309d91591f4b7ac142199efbdf0d63f506c9
font_02_sfnt_off0001038b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038B 16124 bytes
SHA-256: 6e5f14b44ca3a668bd75165f7ca818f89c0bc95466b08ef3d44a4bd45a3d7e47

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