Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b0561ddad192fd5…

MALICIOUS

PDF

78.5 KB Created: 2021-02-15 07:37:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: ef9f94b0c4735963933c2d8d0489c636 SHA-1: b5ad7a51e32feacdbcf4d0e9d5fa8887ea6fe939 SHA-256: 7b0561ddad192fd5e9a253d73e87cfe3577664a18ddd05173b132e3552893798
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO spam operation. The primary URL, 'https://seumenha.ru/wix?keyword=a+course+in+miracles+made+easy+alan+cohen+pdf', indicates a lure to a specific topic. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious intent, likely to redirect users to phishing or malware-hosting sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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 https://seumenha.ru/wix?keyword=a+course+in+miracles+made+easy+alan+cohen+pdf PDF link annotation
    • https://muxetomanudone.weebly.com/uploads/1/3/1/4/131406273/lutesuno-jewuzegeboxo-wexodagube.pdfIn PDF document text
    • https://nulabelavomeviz.weebly.com/uploads/1/3/1/4/131413951/nuzepifipizolejijuje.pdfIn PDF document text
    • https://jutegejedexugak.weebly.com/uploads/1/3/5/3/135384922/xufaf_gorudiruvama_gozobewijoba_birumovotumitol.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/MiiLiaR/real_flying_car_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/navezige/jCigBgd/dozalefunomiruzug.pdfIn PDF document text
    • https://cdn.sqhk.co/zewapoxi/PiemH7M/rovusasikidamov.pdfIn PDF document text
    • https://sazulolako.weebly.com/uploads/1/3/1/4/131453808/7922016.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/shcakjb/denon_audio_receiver_reviews.pdfIn PDF document text
    • https://gujukajiw.weebly.com/uploads/1/3/1/4/131437807/9074224.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/hdKbifM/ditavowewewufuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469370/normal_6022848aacb2d.pdfIn PDF document text
    • https://vapukukoson.weebly.com/uploads/1/3/0/7/130776878/053eb14df.pdfIn PDF document text
    • https://cdn.sqhk.co/zupodejadofe/idia1Um/duolingo_swedish_words_list.pdfIn PDF document text
    • https://cdn.sqhk.co/puburikob/hDUicje/tap_dance_classes_for_beginners_near_me.pdfIn PDF document text
    • https://powudeli.weebly.com/uploads/1/3/4/7/134772307/fojijovese.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449392/normal_5feb1a5ac2e2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF629 5484 bytes
SHA-256: e63808e8ce3438aeb8c95f158cacc7053394d5f94ed603ff71cd22a32bb6bfce
font_01_sfnt_off000108aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AA 10396 bytes
SHA-256: 6b977d5adc3b84788070db07044fe41c0086417c6d7d5462f548f2c4c20f3479

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