Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e1f7747d6da136…

MALICIOUS

PDF

92.4 KB Created: 2021-04-04 23:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a2676c9599087bf5d14b5ca024c275d3 SHA-1: b3edade5a9d478486415af55119191134274bd09 SHA-256: 32e1f7747d6da13665c05aafe0cfdf3ee3aa3f8a52d88a27a311eeae002f38c6
164 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. It uses an invoice-themed lure. 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 0.9996

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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://bologen.ru/123?utm_term=m%25E1%25BA%25ABu+cv+ti%25E1%25BA%25BFng+anh+file+word PDF link annotation
    • https://wunanowadile.weebly.com/uploads/1/3/4/6/134600652/5821804.pdfIn PDF document text
    • http://ezfix.asia/dubakesuralenajixukuzinigmth2.pdfIn PDF document text
    • http://nuwiratuzitezep.22web.org/scott_pilgrim_vs_the_world_comic_book_online.pdfIn PDF document text
    • http://folutelegaraz.iblogger.org/72780796054.pdfIn PDF document text
    • http://naturaitalia.space/jimibijenezoxidefukimineba17m7.pdfIn PDF document text
    • http://sy0n.icu/what_are_the_types_of_waste_that_organisms_produce25olo.pdfIn PDF document text
    • http://temilops.xyz/2878494043302rlk.pdfIn PDF document text
    • https://bonopabugo.weebly.com/uploads/1/3/4/5/134581776/7ebd9f618502.pdfIn PDF document text
    • https://zabomefekezene.weebly.com/uploads/1/3/0/7/130740536/6632979.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/pioneer_avh-x3600bhs_appslg59n.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mipagolawalixa.onlinewebshop.net/good_night_moon_book_images.pdfIn PDF document text
    • http://giwinilugo.epizy.com/36087569131.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/78075699890.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/kitchenaid_5kpm5ewh_stand_mixer_5_qt_4.8_l_heavy_duty.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/jejixakimazuxokuroxebo.pdfIn PDF document text
    • http://wozilololigib.epizy.com/durham_region_recycling_guide.pdfIn PDF document text
    • http://kaloruligot.onlinewebshop.net/55775303764.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/libro_felices_sueos_descargar.pdfIn PDF document text
    • http://xumuturil.epizy.com/tintin_in_congo_color_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/vomibopiriwitunivato.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED71 6744 bytes
SHA-256: b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808
font_01_sfnt_off0000fe56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE56 5788 bytes
SHA-256: d21119f5498e4c23c0d4ce742b65925d4b6022021f2c18012ed637c99fb90d05
font_02_sfnt_off0001114b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1114B 22776 bytes
SHA-256: d9fd4cee8188baa46deb597fac55922979e94211776eeb990934afe8e74722b2
font_03_sfnt_off00014436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14436 18616 bytes
SHA-256: 722f8e5cd28e24ad61ea79aeeb0f7638afb0e5621d519adbfeb4b5ba99da3b9e

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