Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd1ea8fcab5e97d…

MALICIOUS

PDF

72.4 KB Created: 2021-03-25 02:40:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: ed0f2f973ecc627933e94d7e45b1750d SHA-1: 109423194508aba671ca15fd63aa7ae2e6d166ba SHA-256: bcd1ea8fcab5e97d3d84b5736ed5e02d634cd2fd8e0a44c5d2ab6de942e792ca
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous external links, including one to 'resalured.ru', suggesting a phishing or SEO-based attack. The presence of embedded JavaScript, though not directly visible in the provided DOC BODY, is implied by the 'PDF_SEO_LINK_FARM' heuristic and the general nature of such PDFs, likely used to redirect users or execute further malicious actions.

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
  • 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.
  • 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/award?keyword=prior+auth+form+pdf PDF link annotation
    • http://wspring.space/java_7_filehippo_64_bitzp777.pdfIn PDF document text
    • http://copyrightsupport-ig.com/idsa_guidelines_intravascular_catheter-_related_infectionsb4vtb.pdfIn PDF document text
    • http://mazafaka69pussy.online/who_is_the_person_of_the_year_2020_time_magazineehau3.pdfIn PDF document text
    • http://vvvvvvvvvvvvvvvvvvvvvb.xyz/jujenovj5gm1.pdfIn PDF document text
    • http://garantiya62.ru/bodyguard_movie_20185kffo.pdfIn PDF document text
    • http://saveyoutubebot.com/8887219937jjdgi.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/jigezilor/91356559002.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/bexogokosefapikegosim.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/tosufigavunibujoz.pdfIn PDF document text
    • https://5fa60de5-32ab-41ac-ba65-77330e21e623.filesusr.com/ugd/2e16aa_4a328a15f4a54d7e91859969ddb44dc7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fapaga/68065798293.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/garmin_gns_430_terrain_update.pdfIn PDF document text
    • https://58f604bd-1fd8-4cfe-af9b-f15e67d030d5.filesusr.com/ugd/9a7439_8015baf2f54f4ed583bfcced153a5fb3.pdf?index=trueIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_bcb8fe44b9a34de1a9c5a14009b2d781.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/hd_love_wallpapers_1080p_for_android_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/bujanepuzel.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/52497955002.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/75050640633.pdfIn PDF document text
    • https://625f08e2-3d8e-45b5-8e8c-b95d001c5c7c.filesusr.com/ugd/d94ae5_d27e25b95e9b466a9ee48ae9c90a06e1.pdf?index=trueIn PDF document text
    • https://2ffa788b-df2f-461f-b9c5-573bec542745.filesusr.com/ugd/374ce0_8b2f06f31bce48678bc1670d86134026.pdf?index=trueIn 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_off0000dd1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1C 5072 bytes
SHA-256: 93ea5e8cbc31362138d9d5c4e4fc135b7f97b2fa8391cfa4a05800806a915496
font_01_sfnt_off0000ee37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE37 10844 bytes
SHA-256: f62a1c6f659c237aaa7c054f7e6e8bf4b398f3323734894ef635e68fd3f59ec1

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