Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd78b0d4746d732b…

MALICIOUS

PDF

77.0 KB Created: 2021-03-10 22:09:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 3bdbe85ce0660e1197119e0f3b950712 SHA-1: 8afbb63600ba801cc245b977dc9cacc192da30b6 SHA-256: cd78b0d4746d732b8831a135b5acb2fdd189dd9fe7f1f8a4d8c9aa33bf7119ef
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://leonvi.ru/strik?utm_term=monkey+business+used+in+a+sentence PDF link annotation
    • http://gomigapujasep.sportsontheweb.net/viper_7752v_remote_start_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/surudije/ggusjjH/92542530966.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5ffa421d38e7c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484169/normal_6008d1e082ae2.pdfIn PDF document text
    • https://cdn.sqhk.co/kubepugemaki/X7jdbqZ/stupid_zombies_3_day_54.pdfIn PDF document text
    • http://zonitupupafof.sportsontheweb.net/7970723028.pdfIn PDF document text
    • https://cdn.sqhk.co/xanuramalu/eijVhfr/mererigozekizubuluf.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxarufodir/g02g1ZP/gawus.pdfIn PDF document text
    • https://budojidotepaso.weebly.com/uploads/1/3/5/3/135312143/degujorusejuja.pdfIn PDF document text
    • https://bisebisa.weebly.com/uploads/1/3/1/4/131406118/2873901.pdfIn PDF document text
    • https://napokepuwaju.weebly.com/uploads/1/3/1/1/131164128/tilemexu.pdfIn PDF document text
    • http://wupevijijoze.mygamesonline.org/74921705596.pdfIn PDF document text
    • https://cdn.sqhk.co/pemazekefise/XEGgcgh/luvofejekefoziz.pdfIn PDF document text
    • https://jejaxeka.weebly.com/uploads/1/3/0/7/130739175/8599264.pdfIn PDF document text
    • https://palisuxil.weebly.com/uploads/1/3/1/0/131071308/bepuneri.pdfIn PDF document text
    • https://cdn.sqhk.co/rotonoba/xhjNwgd/rafaladufa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/819e6820-bfa8-43e3-9780-699bf5486bc6/medaxibuvexige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4275d28a-3d6c-45a6-837a-999ab171f962/ge_18_qt_roaster_oven_turkey_recipes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b146588-59ca-49f0-a30a-a0ff21645e71/where_did_kaash_paige_go_to_high_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97058cdb-c886-4f53-82a8-a836ba83db60/brother_pt-h100r_beschriftungsgert_rot_wei.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_off0000ef8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8E 5116 bytes
SHA-256: 0c65772d79d036936375f98723d85281c6239b0df40de0b58c32fded5e062e74
font_01_sfnt_off0001011d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1011D 11340 bytes
SHA-256: ec81fb8cb917262a3b5f60baafd4deb2797f01bea4e6bf7ab5bc5b22e0349b3f