Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2224ff5bc711f1…

MALICIOUS

PDF

81.1 KB Created: 2021-09-20 11:36:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: a6477e0776a288152212e9b96352eefe SHA-1: 219ad14c74e55c36b54336a3e07ba1778eb828f8 SHA-256: 9f2224ff5bc711f161afa7a75e4e09929dae5ba49e7d5b93985383f758e2d091
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified numerous external URIs and a link farm structure, suggesting the document is designed to redirect users to potentially harmful websites. The presence of a QR code lure further supports the phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://catamma.ru/uplcv?utm_term=lord+spriggan+qr+code PDF link annotation
    • https://jager-ig.tw/up_photo/file/84264852888.pdfIn PDF document text
    • http://cloverdiamond.com/file/rutip.pdfIn PDF document text
    • http://phamtrangia.com/upload/files/migitozudiwe.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/16138c7a9b00e6---xavobutejabukosuzomawap.pdfIn PDF document text
    • https://siam-royal-view.ru/data/files/vowurulonajibaxunadegi.pdfIn PDF document text
    • http://zeroseistudio.eu/userfiles/files/44053245714.pdfIn PDF document text
    • http://hurtowniagrafit.pl/userfiles/file/60727325351.pdfIn PDF document text
    • http://vladekoservis.ru/files/bozaxukusijegaratogomaz.pdfIn PDF document text
    • http://studiolaviano.it/userfiles/files/68106239817.pdfIn PDF document text
    • http://stringladies.cz/userfiles/zaxupalawifugepezimax.pdfIn PDF document text
    • http://geojeoceanhotel.com/userfiles/file/20210904075833.pdfIn PDF document text
    • http://madveras.com/ckfinder/userfiles/files/fapigidazodol.pdfIn PDF document text
    • http://architetturaurbanistica.it/userfiles/files/gapipozedapopegilalexuga.pdfIn PDF document text
    • https://matratva.in/userfiles/file/rikinakojuruxobaraz.pdfIn PDF document text
    • https://stpatswatertown.org/ckfinder/userfiles/files/kelefalojas.pdfIn PDF document text
    • https://jeneifogaszat.hu/cikkdata/files/97568290258.pdfIn PDF document text
    • http://yalcinsezer.com/upload/ckfinder/files/fisusaxila.pdfIn PDF document text
    • http://www.kickcommerce.com/userfiles/file/misukidosuxu.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/161403d7a33446---92633129438.pdfIn PDF document text
    • http://studiofantino.it/userfiles/files/8154258915.pdfIn PDF document text
    • http://cheniou.handysociality.com/upload/files/14365514386.pdfIn PDF document text
    • https://www.frontieregypt.com/sites/all/libraries/ckfinder/userfiles/files/rejuderaxonewez.pdfIn PDF document text
    • https://rowadalbyt.com/userfiles/files/nitig.pdfIn PDF document text
    • http://artwatch.ru/userfiles/file/dixanefenux.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD897 17652 bytes
SHA-256: 9c1b42039a01721b15bb1a9168b1a8340ec52f9da896539e390c47af12236fa5
font_01_sfnt_off000106ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CE 10648 bytes
SHA-256: 578f8600f1929d5a98e117300baeb91a4f7c13a598210a6aaaacd81b938f4ff2
font_02_sfnt_off00011eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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