Malicious PDF — malware analysis report

Static analysis result for SHA-256 d96aca0935f4385e…

MALICIOUS

PDF

70.4 KB Created: 2021-04-05 10:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b6b895422b2a30694b875674d61ab7c SHA-1: ef0ed192d6522088b3c48da1c92024706e59d2e5 SHA-256: d96aca0935f4385e5cc67bff46c0aa01e4a3e4a88fd4f923b40b7dc41aaa7269
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are dynamically generated and point to other PDF files, suggesting a link farm or SEO poisoning tactic. The primary URL, 'https://soxebez.ru/award?keyword=asana+pranayama+mudra+bandha+deutsch+pdf', is likely intended to lure users into clicking through to potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/award?keyword=asana+pranayama+mudra+bandha+deutsch+pdf
    • https://gekafokolasiga.weebly.com/uploads/1/3/1/3/131384301/dakixaduginexuk-xujix-rumuzazun-jenifebizapeve.pdf
    • http://midarujiwuvi.mygamesonline.org/bhavani_ashtakam_tamil.pdf
    • https://tovegema.weebly.com/uploads/1/3/4/5/134505564/16a1f882258a261.pdf
    • https://bodupakodekafas.weebly.com/uploads/1/3/2/6/132680796/kixufemaxu-tuzaminexuvowo-gilinekoz-fatagafof.pdf
    • http://xubabutogazide.22web.org/vector_triple_product_proof.pdf
    • http://muwiduvepobuz.mygamesonline.org/38393023276.pdf
    • https://xigobiniliw.weebly.com/uploads/1/3/5/2/135298108/liduvages_pumofeba_verak_risofunobenewe.pdf
    • https://kofepuxola.weebly.com/uploads/1/3/4/7/134718869/vopabomasanomageko.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cf268418-7549-4780-9cff-e39e61b5276c.filesusr.com/ugd/0b1cf2_9c1005ecd4f34384b2098de29508fe53.pdf?index=true
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_ff49965657e44c4cb3c266b4352d1083.pdf?index=true
    • https://s3.amazonaws.com/tikofaketonub/kakobel.pdf
    • https://ea0a6730-5b47-42bc-899c-5b27b21b32ea.filesusr.com/ugd/184298_e7ccf1cf215243dca81ddc8b487b28fc.pdf?index=true
    • https://s3.amazonaws.com/nodetuxapabara/android_tv_stick_hdmi_airplay.pdf
    • https://5a8aee2d-3d68-4c09-98ed-743c9c56d6fd.filesusr.com/ugd/460efe_afeca6b729fe4612b1bc2775df5e0a96.pdf?index=true
    • https://s3.amazonaws.com/lotibabakuj/audio_video_mixer_video_cutter_app.pdf
    • https://s3.amazonaws.com/dixaleko/pibevupogave.pdf
    • https://s3.amazonaws.com/dojivewobasuval/brother_printer_drivers_dcp_l2540dw.pdf
    • https://f4a80ce2-0a24-44e2-aff7-13c87a434ee9.filesusr.com/ugd/ace063_4c4e2388a91047948cba1016c42b20e5.pdf?index=true
    • http://larotusen.rf.gd/70985846020.pdf
    • http://lumolak.rf.gd/nikosovaka.pdf
    • https://s3.amazonaws.com/wolina/nevonenujiwekibofa.pdf
    • https://s3.amazonaws.com/kiwopusafize/dowubipedarepasoxaduw.pdf
    • https://s3.amazonaws.com/pasutiz/62779777452.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d53a.bin
23fd88b9c4f72ffb9331124ba8b6b6ed65847f6833ea8094f6f1e59f6c28eca7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD53A 5592 bytes
font_01_sfnt_off0000e81c.bin
7b0263b7ad8e13ae113851cfe4eefe9bff75d84e0313070452b44909a377bb15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE81C 10944 bytes

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