Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b0701f084e6abc…

MALICIOUS

PDF

106.6 KB Created: 2021-07-09 02:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 5ea3ce2d4b8c582549b03914e0ba5c47 SHA-1: d600859bdd506cfec5a42e05751f3622d88ca984 SHA-256: 68b0701f084e6abc16a6966a1ed132051f426771a8df44c3f556f923232c7056
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. The heuristics indicate it functions as an advance-fee scam, using lures related to lotteries, prizes, or parcel deliveries. An embedded JavaScript stream was also detected, suggesting it may download and execute a second-stage payload from one of the numerous external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://chcial.ru/uplcv?utm_term=what+is+the+past+perfect
    • http://vigova.vn/Images_upload/files/83533336560.pdf
    • http://cezanart.com/userfiles/file/pebedorowozesu.pdf
    • http://sewakendragroup.com/userfiles/file/75553518831.pdf
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/mmhv94bft8arp1f5e95oc9pri7/97149765088.pdf
    • https://pasarantogel2.com/contents//files/56010085176.pdf
    • http://seabeachthailand.com/UserFiles/file/sefabuselipebo.pdf
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/20fbd49f57a289ed37c545566b1e632a/84892467465.pdf
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af26ded449---lekilufakopupupizusifufik.pdf
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/6010657c5ec68902d66410778e8ab674/11870953080.pdf
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/71ohfqhai5d3ughuc2h0bvkng0/62800884689.pdf
    • https://moraure.net/js/ckfinder/userfiles/files/1643341157.pdf
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/s7vnmb8v9jrtk8uf49989kohr4/7025557851.pdf
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acca7772e69---1918508349.pdf
    • http://computergramm.com/userfiles/file/15050222912.pdf
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072836529cd6---mowaw.pdf
    • http://kondicionery-vidnoe.ru/upload_picture/file/48876414409.pdf
    • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/50b68bd4da6cf7c580edd0aed456c0e6/sidafonam.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ba0c2f2767a---dutenabinijewulazil.pdf
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/tga1jao7u0qav6rhn90e0rp6pt/53713281198.pdf
    • https://hospvetcentral.pt/site/upload/file/zinaroxitifilo.pdf
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/t09joai9rtn4mk3g8i0f6hogu2/63831225551.pdf
    • 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010988.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10988 16792 bytes
font_01_sfnt_off0001219a.bin
223b34ea30b0e754f118448cbbfd2557790626b47266f610e5c2d3718ef23e7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1219A 25004 bytes
font_02_sfnt_off00015e6f.bin
eeb8d80fe55d8680fcb889814f66a3ffab4b1bed51208b85bb36000ee6d6562b
pdf-font-stream PDF embedded font (sfnt) at offset 0x15E6F 2224 bytes
font_03_sfnt_off0001683d.bin
c47a3967d217e21b3c38f4a2ca2d42b64e554685c0b147fa426ebe35b7b06935
pdf-font-stream PDF embedded font (sfnt) at offset 0x1683D 18564 bytes
font_04_sfnt_off0001853b.bin
724977fcc9366e07912d0e3f3abdcc3192dba19bac7acecfe72a9dbf40cbc24b
pdf-font-stream PDF embedded font (sfnt) at offset 0x1853B 10300 bytes