Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6086ccaa507fadc…

MALICIOUS

PDF

71.3 KB Created: 2021-02-18 22:19:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a0fa57aa2e3062ef4290f0f599a59ace SHA-1: ff68f99f0c91e893b73709e8125b334a6a37a7cf SHA-256: f6086ccaa507fadcd290de3d126fccb33cce8cd5e212001f5885340014f7a377
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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.
  • 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://crophysi.ru/wix?keyword=finding+surface+area+of+a+rectangular+prism+worksheet In PDF document text
    • https://sijotifibiga.weebly.com/uploads/1/3/0/9/130969940/986380.pdfIn PDF document text
    • https://tuxewuwa.weebly.com/uploads/1/3/4/7/134776055/diradap.pdfIn PDF document text
    • https://xurugafidas.weebly.com/uploads/1/3/6/0/136081795/pidizut.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/kwuhdhe/beat_color_hop_beat_edm_ballers.pdfIn PDF document text
    • https://cdn.sqhk.co/nudekikusefi/TrjcibP/dagaxafamoxe.pdfIn PDF document text
    • http://hookup755.fun/classic_bubble_super_bobble_game_boy_color_romunooj.pdfIn PDF document text
    • https://xafukulirodut.weebly.com/uploads/1/3/1/3/131379356/dorowow-kagagiwomedotez-mizegawewexo.pdfIn PDF document text
    • https://lonofajizol.weebly.com/uploads/1/3/5/3/135389348/a1fa1f23.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wovitiku/the_hummingbird_project_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/great-_west_lifeco_annual_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/42174477225.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/17403348068.pdfIn PDF document text
    • http://zapofekeba.rf.gd/begidiseraropiwo.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/lines_of_symmetry_worksheets_for_4th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/4755466634.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/vaijanti_mala_image.pdfIn PDF document text
    • http://fagorawed.rf.gd/the_wolf_among_us_adreno_full_apk.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A5 5680 bytes
SHA-256: 2043a5d28df4bc8fd3eb7c34b029b370e0cbd10e4da1a33b151a932627f3108a
font_01_sfnt_off0000e9e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E9 10536 bytes
SHA-256: 5f401581dd9e834768f22eed6dc0a548f0e465a0412cead0f8444d2a80001ee9

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