Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49db76d1e7da832…

MALICIOUS

PDF

76.3 KB Created: 2021-03-04 20:03:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: d9a8f3d7df7321ccd29c05deeee02f0f SHA-1: b0967df807c28fb372403884a23fd5e4b46c32d5 SHA-256: d49db76d1e7da832f64400d4bbb4bb5de37024627216e6749cc283489ee6a031
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, forming a link farm, and is flagged by ML classifiers and ClamAV as malicious. The presence of embedded URLs and the overall structure suggest it's designed to redirect users to potentially malicious sites, likely for phishing or to download further payloads. The document body, though heavily obfuscated, contains keywords related to 'Medicare benefit policy manual', indicating a lure to deceive users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/wix?keyword=medicare+benefit+policy+manual+chapter+14+section+10 PDF link annotation
    • https://renixopofofof.weebly.com/uploads/1/3/4/4/134486295/ramijigamatad-bebukuvolekari.pdfIn PDF document text
    • https://lefawiput.weebly.com/uploads/1/3/5/3/135324435/8804247.pdfIn PDF document text
    • https://vidijizuv.weebly.com/uploads/1/3/0/7/130776341/taxabevibimizawixag.pdfIn PDF document text
    • https://rovepegolotiru.weebly.com/uploads/1/3/4/3/134319415/54b08.pdfIn PDF document text
    • https://vutameko.weebly.com/uploads/1/3/4/5/134576445/gipujuvitukizoja.pdfIn PDF document text
    • http://nemugub.mywebcommunity.org/leromarud.pdfIn PDF document text
    • https://kezagoguz.weebly.com/uploads/1/3/4/1/134131769/95aff5.pdfIn PDF document text
    • https://giruwaferelesed.weebly.com/uploads/1/3/4/8/134850821/vavelejo_koberoduzutel_waxavasek.pdfIn PDF document text
    • https://tubozabuzimez.weebly.com/uploads/1/3/4/8/134878922/b9fa6ac1.pdfIn PDF document text
    • https://bivojivowuru.weebly.com/uploads/1/3/4/7/134726538/gevofe.pdfIn PDF document text
    • https://wetolobumusu.weebly.com/uploads/1/3/4/5/134579125/wezagifan_muwoxati_velol.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/how_much_is_a_polaroid_sx_70_land_camera_worth.pdfIn PDF document text
    • https://notefusiwedamap.weebly.com/uploads/1/3/4/8/134872173/wejimajediw-jawigizil-gebopagofilagaf-filixe.pdfIn PDF document text
    • https://lutitisuputusi.weebly.com/uploads/1/3/1/4/131437948/kelodusavapudij.pdfIn PDF document text
    • https://xukonupuzifig.weebly.com/uploads/1/3/4/6/134621954/2c8ca8065f10.pdfIn PDF document text
    • https://lonitavow.weebly.com/uploads/1/3/4/3/134355974/kawutewavekaki-mabib-pikamabo.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/kibavutibeved/30525034606.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/tutuzenelojufexomak.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/puzavibo.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/kofamezaxusuderi.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/filmywap_2017_hollywood_horror_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/how_to_sync_brighthouse_remote_with_tv.pdfIn 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_off0000ed91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED91 5924 bytes
SHA-256: 15ef269237c394c90929e1599b39f70d2d380367245b51d4dbf2fe1226835054
font_01_sfnt_off000101a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A9 9928 bytes
SHA-256: bc4409c12baea8f8bc2f077c523b1a06e5474c2a6c4357a093f01447b0145269

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