Malicious PDF — malware analysis report

Static analysis result for SHA-256 00dde55f38de2512…

MALICIOUS

PDF

71.6 KB Created: 2021-04-28 11:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c3c985e3756a0d52db458b1e8b8d4a34 SHA-1: ee6da2a16dc2be6d704c6ed0a0a5330fd57ea26b SHA-256: 00dde55f38de2512ba0adbee58a44cec57b60085bb789ec53f1888f264644b57
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/strik?utm_term=whirlpool+gold+dishwasher+control+panel+not+working PDF link annotation
    • https://cdn.sqhk.co/zopezepazedo/Rogchi2/xagikafimobixeduzu.pdfIn PDF document text
    • https://cdn.sqhk.co/bixatavafut/XAn7hjX/vawirutipose.pdfIn PDF document text
    • https://cdn.sqhk.co/rijakobebux/biiOpjc/81977901668.pdfIn PDF document text
    • http://opros.xyz/autel_code_reader_updatev1ple.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412762/normal_60035da42ffb1.pdfIn PDF document text
    • http://ipoteka.net/into_the_abyss_5e20j7p.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/geEhgge/31609844554.pdfIn PDF document text
    • https://cdn.sqhk.co/figakeves/ji9Dqhc/the_kreator_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369933/normal_605fee77f337b.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/iKfGdmq/91102179384.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/e9A0ges/railroad_crossing_mania_ultimate_train_simulator_2018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385635/normal_5fe1d868eaf49.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/cYVihQ9/derwent_academy_watercolour_pencils_12.pdfIn PDF document text
    • http://idealslimitaly-official.site/what_is_the_economic_loss_doctrine2s3g9.pdfIn PDF document text
    • https://vejiledulibona.weebly.com/uploads/1/3/4/3/134318828/lutamajeludev.pdfIn PDF document text
    • https://jurisosisirebak.weebly.com/uploads/1/3/6/0/136086550/fegowovarapegogofa.pdfIn PDF document text
    • http://healsmall.space/comprehensive_reports_in_user_research_methodsm5928.pdfIn PDF document text
    • https://cdn.sqhk.co/kelifevaz/mhbV4ih/newuliganarupekejumako.pdfIn PDF document text
    • https://cdn.sqhk.co/mosugukasiba/DggyqJi/chocolate_ice_cream_recipe_no_eggs_cuisinart.pdfIn PDF document text
    • https://cdn.sqhk.co/wisewuguv/fghKiek/silkie_chickens_for_sale_houston.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380887/normal_6011e36a87d23.pdfIn PDF document text
    • https://kexinebig.weebly.com/uploads/1/3/4/3/134338338/bibadajusote_fujujamamu_tefidofuwogumo.pdfIn PDF document text
    • http://successinyourlif.website/vulcan_pop_bubble_shooter_game2h3n2.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/6UBxXhd/37616569498.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463287/normal_603fe0e7cb65e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d9c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C4 5504 bytes
SHA-256: 0825eef02d0d5c34590a3c751f0ff5cd88034f79e91e70705606704d763b4cab
font_01_sfnt_off0000ec92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC92 10420 bytes
SHA-256: 3fd794d5cbdc1ba62550e8017d8267bce254837e33f3ed1931a55eec46a09b74