Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c4e1ff68052533…

MALICIOUS

PDF

75.1 KB Created: 2021-03-12 07:36:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5b472f5f1c868953e547a42fdbc965b1 SHA-1: 8ef031a27dbf2be4207fdfafca3a35c59b537a91 SHA-256: 92c4e1ff6805253375f9b96a2118831fb320391dfbd5692330c7d24894f4c6d6
202 Risk Score

Malware Insights

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

The PDF contains a lure for a movie download, directing users to a known malicious redirector URL. ML classification and ClamAV detection strongly indicate malicious intent. The embedded URL is used to facilitate the malicious redirection, likely leading to a phishing page or a malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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
  • 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://dafemum.ru/wix?keyword=love+ni+bhavai+full+movie+download+1080p In PDF document text
    • https://static.s123-cdn-static.com/uploads/4494677/normal_5fc902232f62b.pdfIn PDF document text
    • https://cdn.sqhk.co/tiviluluje/xNMdjfp/kraton_flying_chicken_restaurant_bangkok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528876/normal_5fd86f06c8dfa.pdfIn PDF document text
    • https://cdn.sqhk.co/susotizakaxe/hfhggia/kinutilene.pdfIn PDF document text
    • https://cdn.sqhk.co/japewaturu/sxTygh6/58805746485.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415944/normal_5fe2f5a2806b4.pdfIn PDF document text
    • https://cdn.sqhk.co/dimumaneda/e0ihhdX/85018591441.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486033/normal_5fe5ed0a8b75f.pdfIn PDF document text
    • https://cdn.sqhk.co/jowowibow/JjiCqhb/13232645357.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/OigGyx9/pet_shelters_near_me_hamster.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_603e48b2acf78.pdfIn PDF document text
    • https://cdn.sqhk.co/pubodegosog/eijHFic/nba_2k20_release_pre_order.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/jaGzy4O/kaneretupakupekuw.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/b2795104-0ec3-4eea-83ef-5740a056d0f6/king_lear_act_5_quotes_quizlet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d69c8706-edc5-45b8-9cd4-f29be24cb698/48166706929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae42904f-1802-4e4c-aadb-4503d998fbe2/what_are_the_healthiest_snacks_for_weight_loss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d713c07-7fae-442a-ae18-a30eb9c3a784/69734851006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25b5c70e-2b12-496b-9e15-05e42d4192bc/pathfinder_kingmaker_stolen_lands_time_limit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d097fa59-3a46-410e-914f-98e8098172cb/what_does_plot_diagram_mean.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_off0000e84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84A 5628 bytes
SHA-256: 1b54ec2e3a248cb50a8a7c14433868d9f6be04653502e52c73192161e6058437
font_01_sfnt_off0000fb69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB69 10316 bytes
SHA-256: 3c2aec2197fbd6cc17f007a30a7cff4f660762329235ae83f158d47944d93208