Malicious PDF — malware analysis report

Static analysis result for SHA-256 208b0a0d85651bbe…

MALICIOUS

PDF

89.2 KB Created: 2021-07-21 22:10:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: cf1325224b9926e14376db5d200fec83 SHA-1: 8fe559d130a038a540c5d2fe3d082ad8dfcbb029 SHA-256: 208b0a0d85651bbeb0716bc5c30329c4d68ac60bd3f39585e7788197842e0859
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to websites that appear to be compromised CMS upload directories. These links are likely intended to lure users into downloading further malicious content or visiting phishing pages. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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
  • 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 http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b97ae9f0494---tumumeraw.pdf
    • https://1877painters.com/FCKeditor/file/sipikuvizoduniresifo.pdf
    • https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/2a8ce6cf609dca8622dbaec45c7b02ce/411423390.pdf
    • http://elm3rad.com/file/36272123921.pdf
    • http://nuraski.pl/wsg/userfiles/96557939601.pdf
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/c7e22bd293dcf5f7ba63581d08e25ccb/tofigopaxivajukut.pdf
    • http://poongdung.com/FileData/ckfinder/files/20210609_451C3527B9B64DB0.pdf
    • http://screen.by/images/file/37961457809.pdf
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/17118068250.pdf
    • http://gwardiajuvenia.pl/zdjecia/fck/file/beworix.pdf
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d33fbbb0871---69841102588.pdf
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094a62f312de---rebajugewawaruj.pdf
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c298b060bc7---duniniteze.pdf
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/f060be0f5f66199e4991bc24359e20f4/76163784581.pdf
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7950e05edc---buxaravonavetax.pdf
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/e149fa41bf8d17a1d0b43ea4110cf270/vejijibariz.pdf
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/e334979c8d5862d91620a04d2bd80f84/nawovijosodigipiwob.pdf
    • http://xn--42-6kcdlkbomh7beggito5p.xn--p1ai/userfiles/file/49756551263.pdf
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/lakemide.pdf
    • http://eternoohydro.com/d/files/zebuzikavo.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/vtho6tcscurs2dvdcmubtm1bc0/13378691721.pdf
    • https://tsegypt.com/file/ruwufizunimobokori.pdf
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608daabdab7a3---44078255050.pdf
    • https://kawanmto.info/contents//files/76078321536.pdf
    • http://thevisionkharj.com/userfiles/files/kegigorewogewejixiju.pdf
    • http://lammensfilip.be/uploads/files/13503864150.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=pdf+to+excel+%26+word+converter+software
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc01.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC01 16792 bytes
font_01_sfnt_off00011417.bin
f5f9b7aa05a159480c10428edc70d95070384f04eb0e8df3adbc0ea75e45215f
pdf-font-stream PDF embedded font (sfnt) at offset 0x11417 9944 bytes
font_02_sfnt_off00012a38.bin
d532a2b6d061ab3293c01ced95463bc601d464a599df240f17fc0359fbda90db
pdf-font-stream PDF embedded font (sfnt) at offset 0x12A38 16984 bytes