Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d59eb9f4f42ca7…

MALICIOUS

PDF

77.0 KB Created: 2021-04-04 09:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 668228a28856d5965bc92fad804666b6 SHA-1: 4c598ce0752c070070651df7dcb06df50f8b856c SHA-256: 32d59eb9f4f42ca79e50ff8f34384532a333e10a42ef85145f911353a65f0f0a
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to SEO-optimized PDF files, suggesting a link farm or content-spinning operation. The primary URL, https://mezovuduw.ru/wix?keyword=spatial+pattern+of+organization, appears to be a lure page. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a phishing or trojan distribution attempt.

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://mezovuduw.ru/wix?keyword=spatial+pattern+of+organization PDF link annotation
    • https://cdn.sqhk.co/zexetiminav/jheHidd/safari_park_tickets_dubai.pdfIn PDF document text
    • https://lakofanagobogan.weebly.com/uploads/1/3/5/3/135386994/kiwazad_rokovavikitaban_kezadazezo_sibobubil.pdfIn PDF document text
    • https://nekitunanozot.weebly.com/uploads/1/3/5/3/135346928/8502523.pdfIn PDF document text
    • https://cdn.sqhk.co/gabadifofibo/El7Ajhx/calla_lily_bulbs_multiply.pdfIn PDF document text
    • https://cdn.sqhk.co/pugudanirav/aShhiao/zombie_shooter_dead_target_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kenalutaxi/hLdihhg/6428851170.pdfIn PDF document text
    • https://cdn.sqhk.co/letopoto/t8gtifg/duvamujunukologix.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/icxghib/figatefabokuvovurajed.pdfIn PDF document text
    • https://nerapusu.weebly.com/uploads/1/3/1/4/131438180/6863005.pdfIn PDF document text
    • https://cdn.sqhk.co/tuforalogidu/Mm4ghj2/lethargy_definition_in_spanish.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/bajapovogam/rosiliv.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/weloxax.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/pemejejofef.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/neoliberalism_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/sagafodovikaze.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/define_canonical_and_standard_forms.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c145cea-887f-40f3-a5b0-360a297d97f4/best_rated_washing_machine_consumer_reports.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/403909e5-85a9-48ac-9ea8-901cca129ebe/31972996307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46dc751b-3613-44e2-8580-5433a4d4c349/surely_youre_joking_mr_feynman_audiobook_youtube.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_off0000f224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF224 5044 bytes
SHA-256: ac135e222f1fe849998338e9bb17b6b753cad386859eca4ed96b1a5bdb0e6229
font_01_sfnt_off00010362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10362 10368 bytes
SHA-256: 9e84d51fa1769a4f92342a18815c66090f304eb4e4bbd7c6b09eeb668933c5c6

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