Malicious PDF — malware analysis report

Static analysis result for SHA-256 169122f946be7d64…

MALICIOUS

PDF

97.3 KB Created: 2021-03-12 06:18:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fb2211faaf8cb5d0e73657fb64fe7b31 SHA-1: 57822914a8a6cd208091fd6188d2d2a3341f7785 SHA-256: 169122f946be7d64dc2d0238c2f8ac9a1ce2fb465141bea1194b77dc5a05b4d6
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1204.002 Malicious Link

The PDF contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. Heuristics indicate a high likelihood of an advance-fee scam lure, suggesting the document's purpose is to trick the user into visiting malicious sites. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or scam attempt.

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
  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://dafemum.ru/123?utm_term=burkina+faso+factsheet In PDF document text
    • http://sesizuxewewax.mygamesonline.org/lincoln_electric_ac-225_stick_welder_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/zatovafer/icheuge/pong_krell_episode.pdfIn PDF document text
    • http://jiwabozaxexe.mypressonline.com/c_tree_data_structure_stl.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/AgeJjiE/archery_bow_range_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/wenewojufaj/ajhc5ib/9503122879.pdfIn PDF document text
    • https://cdn.sqhk.co/voxobidivel/hajbifQ/t_mobile_prepaid_plans_25.pdfIn PDF document text
    • https://cdn.sqhk.co/putomikoluku/SYhgfha/access_different_icloud_account_on_ipad.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/mipeboro/pejeziboxediroxal.pdfIn PDF document text
    • http://sagoralezerelo.onlinewebshop.net/wubububulotajenig.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/beach_buggy_racing_2_hack_free.pdfIn PDF document text
    • https://d0275d90-c5b4-4c72-b581-d0e2b62fc6dd.filesusr.com/ugd/ee54da_2c270471c1394096ab9386e8accc6fa7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/98173079686.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/78358947722.pdfIn PDF document text
    • https://404c0e03-56c4-4888-bb84-d9d32a71a3e4.filesusr.com/ugd/100e2e_71ea1ad9b2264a60a0ef0371e51a4fa6.pdf?index=trueIn PDF document text
    • https://56a7be67-7dca-40da-a973-69ad719fb73b.filesusr.com/ugd/fedf23_d0dee7f33735473e97b54e18a70006ac.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nitatotol/toxoxapovarixebijogatem.pdfIn PDF document text
    • https://5c2df1de-05ea-4e17-9aa3-38adc7ce3153.filesusr.com/ugd/ddd609_925d356793f244d5866d0635b5ae1394.pdf?index=trueIn PDF document text
    • https://ecf8b3bd-8201-449f-a39c-156acd88681e.filesusr.com/ugd/97634b_a975d808f0ef436099303375d1649835.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/85956201128.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/kinematics_equations_of_motion.pdfIn PDF document text
    • https://d23eb412-52e1-45ef-a32a-0c032022daee.filesusr.com/ugd/03485a_f0e04b2ae42643d89af71405b45ace8d.pdf?index=trueIn 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_off00014062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14062 5048 bytes
SHA-256: 38c8dc6f42fdc70f26ae30d8b78044642afc31adc64dfebda731b31533057bc5
font_01_sfnt_off0001518d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1518D 11364 bytes
SHA-256: 0609179df927e0d23c2ea90fd893fe27046d9ebd3cd1e72ebad7cd6a7fae4b55