Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ce177f02514bf91…

MALICIOUS

PDF

84.3 KB Created: 2021-09-01 00:58:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ddd9a8398cbb2fb5719a0c93e65bfadc SHA-1: c38c2d80fef61b6006597a4128b0d4494e0001a0 SHA-256: 4ce177f02514bf914a2e3f484841f0d7076c28b9091d5bab4ab11c6150dc3cde
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is a PDF file detected by ClamAV as a phishing trojan. It contains a link farm pointing to multiple compromised CMS upload locations and disposable hosting, disguised as a download for 'gta vice city for pc free download windows 10'. This indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://rajakeempat.com/contents//files/45222421928.pdf In PDF document text
    • http://fcraregistration.com/UploadedData/file/38484661067.pdfIn PDF document text
    • http://fra2ange.it/userfiles/files/kugorebizolejomakafa.pdfIn PDF document text
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16071f488d2e68---koxig.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a04bdda11e9---88962908397.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d26577b9b1f---47706303905.pdfIn PDF document text
    • http://bellina.pl/userfiles/file/vubewuxuwaloz.pdfIn PDF document text
    • http://dream-mebel.com/pic/file/52728171794.pdfIn PDF document text
    • https://wccia-vastu.com/wp-content/plugins/super-forms/uploads/php/files/21be6721c7e11e61e932812eaa6cb273/99254947714.pdfIn PDF document text
    • http://safarekhoob.ir/basefile/safarekhoobir/files/44232680594.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1610d749f3dfb9---tozirimuku.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/86789924049.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098d6d875e7f---76711856907.pdfIn PDF document text
    • https://fallsplat.se/file/jamiv.pdfIn PDF document text
    • https://alkalacarservice.com/public_html/userfiles/file/futipowinimevuzup.pdfIn PDF document text
    • http://kisito.com/userfiles/file/nevug.pdfIn PDF document text
    • https://lifeteacher.tw/uploads/files/202108311750145260.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/34981b8884142aac36984a1d079977b4/zolaxisiwop.pdfIn PDF document text
    • http://madmojo.com/fckupload/file/87038790287.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/77e71aeac7318ef0d448b6fcc828e083/sutavo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=gta+vice+city+for+pc+free+download+windows+10PDF link annotation
    • 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_off0000e479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE479 11092 bytes
SHA-256: 4cf4269308363bac54ae7ea61b07073d1d0c43d66b8e8c0ed5c6a81fb62b3a75
font_01_sfnt_off0000fe9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE9D 17148 bytes
SHA-256: f8d9ab01f0e5c5f0cbb4b7941d31b317458ef10bb2860ade42dbd99064d94ea4
font_02_sfnt_off00012b40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B40 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1