Malicious PDF — malware analysis report

Static analysis result for SHA-256 07d675a80477fedd…

MALICIOUS

PDF

94.7 KB Created: 2021-02-28 14:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c2ee6cdde9f4dbf9648e97d4a2b5bcc0 SHA-1: 6b5c88c3175fa10bb13d5579ae0adbbad3f4a29a SHA-256: 07d675a80477feddccde34216e03aebf817131f7e79ef5738b2856843915f2bc
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 0.9997

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://golowaki.ru/123?utm_term=ipod+touch+5th+gen+gsmarena PDF link annotation
    • http://labifovejes.mypressonline.com/taxor.pdfIn PDF document text
    • https://cdn.sqhk.co/xijogedobu/e7VTlml/shell_clubsmart_login.pdfIn PDF document text
    • http://liwurivosopap.medianewsonline.com/karcher_2400_psi_pressure_washer_w_honda_engine.pdfIn PDF document text
    • https://potepivogatofef.weebly.com/uploads/1/3/2/7/132740463/wobiped-patekibofofepe-wakuxawufono.pdfIn PDF document text
    • https://cdn.sqhk.co/pabilere/hh9gi7X/2136716667.pdfIn PDF document text
    • http://pawomodom.medianewsonline.com/how_do_you_round_up_to_the_nearest_thousand_in_excel.pdfIn PDF document text
    • http://patajafurep.mywebcommunity.org/weider_ultimate_body_works_exercises_chart.pdfIn PDF document text
    • http://ruwemipuwev.mypressonline.com/9003440146.pdfIn PDF document text
    • http://woziwowariv.sportsontheweb.net/navofuwadumoxetakarakal.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/Njhgfib/zavesukonixatiporalez.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/juduk/pipufuxujeduzalenomo.pdfIn PDF document text
    • http://zubiluwetij.myartsonline.com/36901747557.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/49922671788.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/blumer_symbolic_interactionism_perspective_and_method.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/analysis_financial_performance_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/dusifof.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/wupudowekoxalinabojuguz.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/arumaname_aru_song_masstamilan.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/george_foreman_grill_grp99_recipes.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000145c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x145C5 22284 bytes
SHA-256: 28b92a5de9358635543b31b8dd05da2b5938d19a755e859fe63393f6945ce5aa
font_00_sfnt_off00010d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D35 5516 bytes
SHA-256: 3ad7cf63343f4c9519525d933885708b52168469b49bdc34b42522387729cf47
font_01_sfnt_off00011fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD2 10984 bytes
SHA-256: 7a74d0af5cf21998b3c1bd017dc3eb2e162dce8dfabb4bfd6d87a9277e2306b6

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