Malicious PDF — malware analysis report

Static analysis result for SHA-256 529f70dc3f101dc6…

MALICIOUS

PDF

81.2 KB Created: 2021-05-18 22:58:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0a7fe00680e67771879ee10374305d9a SHA-1: b20d627b9ff8ad4d7d54032af1b3b8d65e17ede6 SHA-256: 529f70dc3f101dc697fb6fea1e7450c0c0ec5580e0f38a2ffe9818b493c4961c
156 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 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://fokemale.ru/strik?utm_term=water+cycle+crossword+the+groundwater+foundation PDF link annotation
    • https://tamoniwezetiro.weebly.com/uploads/1/3/5/9/135961995/8def601.pdfIn PDF document text
    • https://bunemevomuw.weebly.com/uploads/1/3/4/7/134733911/5559536.pdfIn PDF document text
    • https://bokowamimufap.weebly.com/uploads/1/3/2/7/132712050/19374c.pdfIn PDF document text
    • https://lakofanagobogan.weebly.com/uploads/1/3/5/3/135386994/kiwazad_rokovavikitaban_kezadazezo_sibobubil.pdfIn PDF document text
    • https://befufagu.weebly.com/uploads/1/3/1/3/131384284/7289442.pdfIn PDF document text
    • http://sodepaxeka.iblogger.org/power_of_now_author.pdfIn PDF document text
    • http://meweremidef.iblogger.org/groove_armada_at_the_river_sheet_music.pdfIn PDF document text
    • https://sepafolelobonel.weebly.com/uploads/1/3/4/6/134614676/nebopisojiwefaxojor.pdfIn PDF document text
    • https://sutowuvo.weebly.com/uploads/1/3/4/6/134685384/142603.pdfIn PDF document text
    • https://latufuxi.weebly.com/uploads/1/3/1/1/131163666/tebef.pdfIn PDF document text
    • http://xumavedam.22web.org/metole.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/godewumazek/gijazenavanufe.pdfIn PDF document text
    • http://beruleruz.rf.gd/tafupuwimapamu.pdfIn PDF document text
    • http://kunizifafam.epizy.com/jeremy_wade_delle_police_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/below_her_mouth_movie_isaidub.pdfIn PDF document text
    • http://birofasadonu.epizy.com/zimevanosojeji.pdfIn PDF document text
    • http://juvusamis.epizy.com/calibration_of_pressure_transmitter.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/markus_android_model_number.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/how_do_i_pray_for_my_husbands_salvation.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/molaridad_solucin_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/2012_chevy_cruze_lt_0-60.pdfIn PDF document text
    • http://kevebavan.epizy.com/area_formula_for_all_shapes.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/29211917195.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/human_warlock_leveling_guide_classic.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/11858544821.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF077 5372 bytes
SHA-256: c65ca394a84c23bf05b7facb917cab795197816202b7257eb742771ad018d542
font_01_sfnt_off000102cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CB 11212 bytes
SHA-256: 7908ea1a8f9209baa88b6bc41cf4265f6fef588b5dc5ff3b2719a70f29b72fe0
font_02_sfnt_off00012897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12897 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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