Malicious PDF — malware analysis report

Static analysis result for SHA-256 7000d2c1db904dc8…

MALICIOUS

PDF

82.5 KB Created: 2021-03-20 07:26:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0118d2700f8ae9d132f6c74bf6382f4b SHA-1: d6d140f0405a545954df109c744f426397a29393 SHA-256: 7000d2c1db904dc8e7c7adbeef2bee02c187d3c71511188de6bc9998657f15f5
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 point to other PDF files, indicating a link farm or redirection scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jumiwimov.ru/wix?keyword=managing+oneself+pdf+free+download+in+hindi
    • http://rewita.fun/robotica_para_secundariarr2qz.pdf
    • http://ziragekezazu.iblogger.org/zirejetuxunemazobuzize.pdf
    • https://tozikogok.weebly.com/uploads/1/3/5/3/135330875/3068758.pdf
    • https://pagilosotutan.weebly.com/uploads/1/3/0/9/130970008/f1909.pdf
    • https://renugukid.weebly.com/uploads/1/3/0/9/130969315/6107128.pdf
    • http://gagureludi.22web.org/how_do_i_write_a_self_appraisal.pdf
    • https://lemefiware.weebly.com/uploads/1/3/4/0/134017231/foxadowulotiro-fozozodesawi-gaset.pdf
    • https://tonituligavu.weebly.com/uploads/1/3/4/8/134884188/dojojanow-fevukugeta-bagef.pdf
    • http://teplotronic.ru/613814680181zvn5.pdf
    • http://vijoxufomodazug.22web.org/59544215956.pdf
    • https://cdn.sqhk.co/xewafazuk/AijicYs/sandeep_maheshwari_ki_new_video.pdf
    • https://static.s123-cdn-static.com/uploads/4504870/normal_5fe3f7019c19e.pdf
    • https://cdn.sqhk.co/xagaxubibiz/bdhigiT/42358391746.pdf
    • https://cdn-cms.f-static.net/uploads/4492536/normal_6052de5d163b1.pdf
    • https://cdn.sqhk.co/zatufora/jfGiigj/28724509592.pdf
    • http://grantmedica.ru/zikatijazafalifekeperho37v.pdf
    • http://ponopawux.iblogger.org/dofumotalibimotam.pdf
    • http://feelslike35.com/video_er_for_mac_2018iepc1.pdf
    • https://cdn-cms.f-static.net/uploads/4388825/normal_602bad9dace60.pdf
    • http://damita.fun/how_to_use_a_kill_o_watt_meter1zon3.pdf
    • http://fly-drive.online/16550993602xi6qt.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://debetofewozuri.epizy.com/kutavezumomal.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_off0000f657.bin
41366028ee0aea5813988a8f73d486f03e6778007c20b49b15de5a1011bbf3e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF657 5108 bytes
font_01_sfnt_off000107b6.bin
d57454e0ec780d146e0e9e811d42da4a9ad1db90f87ca17de9327e499e8d63bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107B6 11476 bytes
font_02_sfnt_off00012ec2.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12EC2 4324 bytes

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