Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e540a8812c37b20…

MALICIOUS

PDF

75.3 KB Created: 2021-01-27 23:01:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 29ded42bc10e5f7974c8d9808a1ac863 SHA-1: 5746fb5e34836b86282edb0c3359e027cd3a4dcb SHA-256: 8e540a8812c37b2018d80f156cbdc86bf7aa5e9f9a82275b4b0422904a26b3c2
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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/123?utm_term=honda+civic+radio+code+error+4 In PDF document text
    • https://cdn.sqhk.co/wogokodu/eogd2je/35146687895.pdfIn PDF document text
    • https://cdn.sqhk.co/gabogivoxavi/hhhbEhi/luwakizoraz.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/hv7ieRd/jewuvadukemesavamujuzo.pdfIn PDF document text
    • https://cdn.sqhk.co/kufejagefep/lhjgyWQ/download_street_wars_pvp_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/wogefosa/hjbhfaj/50233272991.pdfIn PDF document text
    • https://cdn.sqhk.co/tigadikem/Yhhhggd/nikon_70-_300mm_vr_lens_price_in_pakistan.pdfIn PDF document text
    • http://zebrait.fun/warakaxaza1a0g0.pdfIn PDF document text
    • https://cdn.sqhk.co/derixosu/j3jhigi/kolujavuzufazuxonavamoniw.pdfIn PDF document text
    • https://cdn.sqhk.co/zotofoza/ifjajav/duet_r_b_songs_2000s.pdfIn PDF document text
    • http://petersikdar.com/93159240203z03v2.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/fgjBBig/nadobaf.pdfIn PDF document text
    • https://cdn.sqhk.co/wiwifudu/afjcWjj/24178609741.pdfIn PDF document text
    • https://cdn.sqhk.co/veleviziwew/UXWJ2Ot/what_happens_if_mobile_data_is_turned_off.pdfIn PDF document text
    • https://cdn.sqhk.co/rubutemoxe/gdHpvjf/tmnt_mutant_madness_mod_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/vAaihhS/blundstone_boots_womens_rustic_brown.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/zuniverijesud/tojolabanubiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/27680777291.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/games_like_dead_cells_android.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_off0000eae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE9 4832 bytes
SHA-256: a7ce697004c8ea7b261dd2951f4f57fcae71ead46bf16499b026a8cd5fec14d2
font_01_sfnt_off0000fb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB72 10800 bytes
SHA-256: 09140e3999324a2ea0c57d88e1e034adf3612ff701de36ef04ebd0876fc280f8

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