Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc56fcc94010e483…

MALICIOUS

PDF

76.7 KB Created: 2021-03-22 19:32:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9abc09d9dc779ce5c5a7c213394aa88b SHA-1: 254522a4b1cd624ad28c8a4b9c81b8bff1750d98 SHA-256: dc56fcc94010e48347dae8ca8e93c7b36daa5002bcee3e7469aca90dc92cbeea
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or SEO link farm attack. It contains numerous external links, with one specifically targeting 'badges of trade pdf', suggesting a lure to a phishing or scam page. While no scripts were explicitly extracted, the PDF structure and extensive external linking are indicative of malicious intent, likely to redirect users to compromised or malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/award?keyword=badges+of+trade+pdf
    • https://nixujukasal.weebly.com/uploads/1/3/1/6/131636737/vamusuxewumimus.pdf
    • http://somukegizos.66ghz.com/54556324513.pdf
    • http://agencymedia-ig.com/21116208141dqjtt.pdf
    • https://maruvape.weebly.com/uploads/1/3/4/8/134854924/8824168.pdf
    • https://gumotijilazu.weebly.com/uploads/1/3/1/6/131637190/ef283060eeae.pdf
    • https://posodukur.weebly.com/uploads/1/3/4/3/134347560/7696015.pdf
    • https://nozudepoget.weebly.com/uploads/1/3/1/1/131163917/7787150.pdf
    • http://gotexewadegu.iblogger.org/pazezexogora.pdf
    • http://verifiedbadges-form.com/how_long_does_it_take_to_get_through_the_12_steps_of_aatpnvs.pdf
    • https://cdn.sqhk.co/dokukavifig/bNd8FpZ/24288687533.pdf
    • https://cdn.sqhk.co/tuforalogidu/sOXGWhe/pixel_car_racer_tuner_body_kit.pdf
    • https://jejofiwapo.weebly.com/uploads/1/3/5/3/135312812/59e1bd6efeca.pdf
    • https://pufenenuboz.weebly.com/uploads/1/3/0/7/130738511/komanitorewatin.pdf
    • https://sujarusokebukok.weebly.com/uploads/1/3/1/4/131437349/mofapojorelonep.pdf
    • http://gooddevice-online.com/72350775875197ch.pdf
    • https://jowatewiko.weebly.com/uploads/1/3/1/3/131380225/rubujulolosekis_pejeki_wekiwofi_wulixebopimo.pdf
    • https://voloxamofe.weebly.com/uploads/1/3/0/8/130874475/6438eadf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bumevibil.epizy.com/doll_house_furniture_barbie_size.pdf
    • http://sewoxoxitif.rf.gd/80165823238.pdf
    • http://damewanobojojo.rf.gd/84000062326.pdf
    • http://xagazusapikim.epizy.com/community_law_manual.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_off0000eec5.bin
1139eaf2f35b39ff66f96e7d594b805f7e6467f6fc0534619397cc8e95d1ede7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC5 5224 bytes
font_01_sfnt_off000100a4.bin
76167cadfed00b31a1038ab69581f064b758c8898813b6dbb1df0084ec34c5ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100A4 10832 bytes

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