Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2887cae2240ddc5…

MALICIOUS

PDF

85.8 KB Created: 2021-03-26 12:32:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 192d846785d78acd1a0178754b3f4d3b SHA-1: 774f5bfa9294cef5dc18845b83a00d2725b1d826 SHA-256: a2887cae2240ddc55c37d2b8a9bc2a2fc3ababbf2a95223fa9ce9c751b6cb46a
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are structured as a link farm, suggesting a phishing or SEO poisoning attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to a movie title, likely serving as a lure to direct users to malicious URLs such as 'https://resalured.ru/strik?utm_term=me+before+you+full+movie+online+subtitrat'. No scripts were extracted, but the PDF structure itself facilitates the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/strik?utm_term=me+before+you+full+movie+online+subtitrat
    • https://cdn-cms.f-static.net/uploads/4446161/normal_6054283db60b8.pdf
    • https://static.s123-cdn-static.com/uploads/4495684/normal_60030dd3ce3ef.pdf
    • https://cdn.sqhk.co/tuteremekome/hih9ggD/child_care_aware_sign_in.pdf
    • https://cdn.sqhk.co/vimewiki/ijvieVC/overcoming_obstacles_examples.pdf
    • https://cdn-cms.f-static.net/uploads/4458150/normal_5feaf590a0810.pdf
    • http://pekibimige.mygamesonline.org/kexejajerexeganab.pdf
    • https://cdn-cms.f-static.net/uploads/4366018/normal_602987226570f.pdf
    • https://cdn-cms.f-static.net/uploads/4372358/normal_5fd7df39ac2f6.pdf
    • http://pexarinolal.mypressonline.com/kabbalah_english.pdf
    • https://cdn.sqhk.co/dabozijide/gicdBie/ggplot_geom_line_color_palette.pdf
    • https://static.s123-cdn-static.com/uploads/4486042/normal_5ff1fe2d1c4be.pdf
    • http://xalapuzim.sportsontheweb.net/nebemujetevonuvize.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://68e1e3d4-268d-49bc-a8aa-b119cb10fea7.filesusr.com/ugd/3ceeb9_2261a1896172451eaef0e31c423d7ef2.pdf?index=true
    • https://51956041-da35-40aa-96c1-085c1f47c80d.filesusr.com/ugd/e6e573_e4c5c7d9386744208948c1d0410f29c2.pdf?index=true
    • https://6b5d12f1-3bbc-48af-9ddb-5430d2fe15e7.filesusr.com/ugd/3bf302_1dbc3bb9d81d4b2183663ac369337462.pdf?index=true
    • https://425e2ee7-996f-4c6d-a593-b44a2a39b733.filesusr.com/ugd/bb05c1_e550572d794a4a01aea3de9b3191ddea.pdf?index=true
    • https://931f52e6-cb68-4a93-8e02-54808d33f8b6.filesusr.com/ugd/6290de_4e247b3fb24949ff96d79b1f552af175.pdf?index=true
    • https://a3c35cc3-4a3f-4d41-ab51-8b3e4b114d30.filesusr.com/ugd/2b25b5_32dd27fa54a440d78e1f6d2c2ca05755.pdf?index=true
    • http://sipanokule.onlinewebshop.net/64222674644.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001051f.bin
3b9b29ce5fedffae3bf5de289cd7817b4bcfe0a976f77fa77031f1c1dc882c15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1051F 5104 bytes
font_01_sfnt_off0001166c.bin
ed55d504541db42ede92a8363f245ab5b0c47179c9b47ba82d63b41c91757196		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1166C 10960 bytes
font_02_sfnt_off00013bb8.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13BB8 4324 bytes

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