Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bfc16fadd2fbc0…

MALICIOUS

PDF

376.1 KB Created: 2022-01-12 22:56:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: cb49402689966a34a8a1a5f232210420 SHA-1: 599937db68709d51b516a8915171b8d135215b6c SHA-256: 72bfc16fadd2fbc06722af6faf66beaa15f6094b24daaca216b289e5dbd4972f
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8080

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://arquivolta.net/files/72784305486.pdf In PDF document text
    • http://talleresjpg.es/img/file/xilemetesujafexabixigu.pdfIn PDF document text
    • http://indagosrl.it/userfiles/files/miximuwolilogam.pdfIn PDF document text
    • https://cs-nippon-cp.com/mailmagazine/upload/files/gojusisemeful.pdfIn PDF document text
    • https://robalton.es/Albums/images/file///13674688208.pdfIn PDF document text
    • https://conexusinternational.com/ckfinder/userfiles/file/sowosizomoneloka.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161d9c7d794ca7---busimivo.pdfIn PDF document text
    • https://theptaynam.vn/upload/files/jaridowuvewimimojezuseso.pdfIn PDF document text
    • https://xn--90aoja6ahg5ds.xn--p1ai/uploads/files/zuwotikorurodimalenaled.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/s5no4grch6jghdkc3f8fabegqb/xasujelawugamepeponewan.pdfIn PDF document text
    • https://qualitygums.com/userfiles/file/gimuluxitugevifotag.pdfIn PDF document text
    • http://supportsite.myersi.com/images/e/file/23179774336.pdfIn PDF document text
    • http://www.heksan.com.pl/file/figokefokufirumedom.pdfIn PDF document text
    • http://branonperformance.com/ckfinder/userfiles/files/duxekunukuf.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-9-4/20210904160837891575.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/88df903cb31d288acd58809af720616c/37931355459.pdfIn PDF document text
    • http://kolesnikov.pro/ckfinder/userfiles/files/14494523461.pdfIn PDF document text
    • https://gencerenerji.com/resimler/files/wegex.pdfIn PDF document text
    • http://kvbm.org/pds/userfiles/files/37726156606.pdfIn PDF document text
    • http://surinmajestic.com/phya/ckfinder/userfiles/files/84879658364.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/161ab2ea510318---59393077441.pdfIn PDF document text
    • https://iva-vietnam.com/userfiles/file/93373761038.pdfIn PDF document text
    • https://fullmagicweekend.com/ckfinder/userfiles/files/tuxagekixomokide.pdfIn PDF document text
    • http://dc-a436c1f93717.abmextranet.com/fckimages/file/vejupe.pdfIn PDF document text
    • https://alutat.com/data/file/51123822617.pdfIn PDF document text
    • http://www.dispatchls.com/backend/web/kcfinder/upload/files/kepabazitujuza.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/1hHberoKktI/uplcv?utm_term=service+desk+technician+interview+questions+and+answersPDF 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_off00057398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57398 17508 bytes
SHA-256: d0a21f3929974f70c559641e5274eeb089da065bbcb58d2c8eeaa7c2f9959ede
font_01_sfnt_off0005a108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A108 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0005b7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7AC 10984 bytes
SHA-256: 59586fd8606b2896cd59f3b2a8692cd027c6270cdf1a6aa28a125897c2480cf5