Malicious PDF — malware analysis report

Static analysis result for SHA-256 195b687831f52cf7…

MALICIOUS

PDF

86.8 KB Created: 2021-02-15 00:48:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 72b29bdc22c82b1daa01dbbed351c5e1 SHA-1: bede2ea0339474a7b0ed95e51b9094ac99d7f42c SHA-256: 195b687831f52cf7a466f807dc1503b344657c8c8fecf37543fd60d214d57289
242 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://yafferge.ru/123?utm_term=recover+yahoo+password+using+facebook In PDF document text
    • http://saxefitipar.iblogger.org/shawn_mendes_album_songs.pdfIn PDF document text
    • http://veletekuti.66ghz.com/bidusep.pdfIn PDF document text
    • http://onlinesos.tech/ladalabufitezidilubufikbjpwt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://likoxupukizagan.rf.gd/91314328798.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/wobidinagubigaz.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/vufuzutubusixefalusemerim.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/bollywood_female_actors_images.pdfIn PDF document text
    • https://s3.amazonaws.com/remuv/42826578631.pdfIn PDF document text
    • http://bumerezuwo.epizy.com/21548365371.pdfIn PDF document text
    • http://mutodavop.rf.gd/12968640135.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/soulseek_ns_free.pdfIn PDF document text
    • http://didopip.epizy.com/51430357046.pdfIn PDF document text
    • http://fazozogujezeto.rf.gd/62707630400.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/open_office_sales_invoice_template.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/funny_dance_video_sharechat.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11638 5852 bytes
SHA-256: 4fd122f881a18acbb0c927ef397009f51c73859196edde898e0cff7720a7eece
font_01_sfnt_off00012a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A3E 10632 bytes
SHA-256: 02eb901a19e6db885edcb3a1c87aafdc31754e580dcd68b0464a0278a881cfe5