Malicious PDF — malware analysis report

Static analysis result for SHA-256 7abc8aeeccd15b82…

MALICIOUS

PDF

78.4 KB Created: 2020-12-21 17:41:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0f270bfd5f133006c1b025955ed385e4 SHA-1: bb16905fdcefa560f7bd7f11f8b394c692a42260 SHA-256: 7abc8aeeccd15b822d2b59f5f04aca77032811f4816d2483a39f4ec5207231b4
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, including a primary link to 'trafficel.ru', suggesting a link farm or redirection to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to search terms, aiming to trick users into clicking the embedded malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://trafficel.ru/strik?utm_term=mens+hairstyles+for+thin+hair+in+front PDF link annotation
    • https://litolojinoforiw.weebly.com/uploads/1/3/4/7/134721995/nedokawimowuxuwupox.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/6fffef97-6e10-4856-a204-560b1512e016/kirifovegaxajiwater.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62ced6a3-7db2-48ba-903f-c99df336d8f4/barney_oh_brother_shes_my_sister_korean.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc79b14a4492a057e2477e3/t/5fd666c0491a58544a11df8f/1607886529578/augmented_reality_android_sample_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a48a7f1-814a-4bc1-a575-f8a1a43f9e26/38009858069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fefddc2d-c32c-4819-ac5b-3c7ab758d1c0/46163379413.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c6b3b29-a853-47fd-b61d-ad6dc2eb0ecc/download_whatsapp_apk_for_windows_7.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66076b8467722f1f92596/t/5fcddcd6eb18547f4ba6350b/1607326935068/hand_draw_3d_pose_tool_pro_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afa5f004-09a4-4487-9bb0-39fc7b9a126e/1928063206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cd4140c-d70c-4d88-add3-876340aa8e84/zambales_philippines_hotels.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63076051-9497-4c75-b028-d72485172ac3/dedimunezusururabadoxizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/441752c8-4e99-49cc-8862-ad4bbb7a1667/murano_glass_clowns_value_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55d3ea4b-b5c3-48bc-9cc1-b233358077a8/47446698167.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4d9218e72e5fdbce0b39/1606372755760/pathfinder_detect_evil_and_good.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_off0000f819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF819 4960 bytes
SHA-256: d9927fddfbb0b4e45651153c39b2da8c5a172067183e6a89e7d4e905f3811a84
font_01_sfnt_off00010902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10902 10488 bytes
SHA-256: be5effd9ff51d73abed709b4c733e1a838fbc92dd46be71e9688bac061dbc7a3

Open this report in the interactive analyzer, or submit your own file for analysis.