Malicious PDF — malware analysis report

Static analysis result for SHA-256 431a6c913eb1e24e…

MALICIOUS

PDF

124.2 KB Created: 2021-03-19 03:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 004dc1fcccbb5a0803d297220dbd1e58 SHA-1: 396bb5d229956ffc495fa40823345a5144020d97 SHA-256: 431a6c913eb1e24efc5b33ea63790b3633b822aa02d494614a4fe4753c71b903
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and numerous other URLs are present within the document. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the presence of external links suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • 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/wix?keyword=spiral+review+math+2nd+grade
    • https://cdn.sqhk.co/nixafusoda/5rhIKR7/96758682147.pdf
    • http://dabopoxele.getenjoyment.net/catalogue_samsung_tv.pdf
    • http://rabiwitijif.medianewsonline.com/early_retirement_extreme.pdf
    • http://pristav.pro/toputat70af.pdf
    • http://verezitabel.66ghz.com/85902425312.pdf
    • http://13millions-warzone.store/99253787949pz60v.pdf
    • http://ruwemipuwev.mypressonline.com/89742997495.pdf
    • https://cdn.sqhk.co/bikegola/jbSs2LU/76091846378.pdf
    • https://cdn.sqhk.co/ruxukulalodi/jdgf0t5/73484448070.pdf
    • https://cdn.sqhk.co/pivokazi/gj75igY/gorefawetona.pdf
    • http://sanatoriy-izumrudny.ru/kimutonamoxugu79d.pdf
    • http://zodelem.mygamesonline.org/85442495063.pdf
    • https://cdn.sqhk.co/wexunaveb/ajehiid/coc_clash_of_clans_hack_download.pdf
    • https://cdn.sqhk.co/bidogefapo/dijh4ij/21468844090.pdf
    • https://cdn.sqhk.co/zamepeja/HhgBfgd/26093949416.pdf
    • https://cdn.sqhk.co/xoxifopu/Dhihhyt/10375687777.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xesovukefezusag.rf.gd/brunswick_east_restaurants_dining_guide.pdf
    • https://s3.amazonaws.com/dowavelaxam/free_fairstars_audio_converter_crack.pdf
    • https://s3.amazonaws.com/wopari/video_audio_cutter_software_free.pdf
    • https://s3.amazonaws.com/goveruduzewoxu/93590389573.pdf
    • http://pifaramurul.rf.gd/miss_international_2005_question_and_answer.pdf
    • http://luvabokinoleg.onlinewebshop.net/tokikidin.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000180b4.bin
629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x180B4 6440 bytes
font_01_sfnt_off000190a8.bin
fbcfe28ebf2b26e7a439eaa7889e13404f38aecefc6545f7ec8077bb6bbc0334		 pdf-font-stream PDF embedded font (sfnt) at offset 0x190A8 5580 bytes
font_02_sfnt_off0001a38d.bin
a364c98bc770a2c0f296da4975d36c9e50229ab7211a7b7719c8608e421b9143		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A38D 11564 bytes
font_03_sfnt_off0001cb26.bin
1ee341141eaeb8fae1a6ffe221d5ee21db903120129dbad909a7a8054231670f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1CB26 16240 bytes

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