Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f14a293b1bcd075…

MALICIOUS

PDF

83.6 KB Created: 2021-04-02 16:21:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: de59b4ea72776a4d85e6778c94552ee4 SHA-1: 20ebade3cb0c634c4af437372d2da61fb2eacb97 SHA-256: 5f14a293b1bcd0755725890ad37edf65607e238b503346ec6d5d9121d6daa79f
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The embedded document body text, though heavily obfuscated, contains keywords related to 'hack' and game titles, potentially serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/wix?keyword=taichi+panda+3+diamond+hack PDF link annotation
    • http://lnstagramcentre.net/wall_street_journal_index_rate_today6kc9s.pdfIn PDF document text
    • http://lnstagramoriginal.com/time_bound_higher_grade_option_formlaedm.pdfIn PDF document text
    • http://vakosaditozig.22web.org/angielski_sownictwo_c2.pdfIn PDF document text
    • http://bufanono.iblogger.org/99271185178.pdfIn PDF document text
    • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mibexalaxesu.epizy.com/wajudumawepezabevenetib.pdfIn PDF document text
    • https://849cba27-c1c2-4801-a47f-514a08c45c3c.filesusr.com/ugd/7f7a2c_8512d6b421e442c59204ababb3d50a2c.pdf?index=trueIn PDF document text
    • https://63995da9-74be-4895-8497-a4fa53c9845d.filesusr.com/ugd/788c84_a70f1ecc44de45ff8da055a027c5243d.pdf?index=trueIn PDF document text
    • https://d25e5d79-f3dc-43ab-8538-58f2f4730235.filesusr.com/ugd/898300_08333d39b496459fb2a920c113b2ed9c.pdf?index=trueIn PDF document text
    • https://8eeb1f0a-0cdd-4c66-98a4-83777b49fb54.filesusr.com/ugd/64f9d2_fc8ca097178d4ce2a7b85b028f82aab0.pdf?index=trueIn PDF document text
    • https://43081b45-6e48-4b43-b724-9328fda377ae.filesusr.com/ugd/26481d_90f4966ebaad445d9a96d685e95dea0c.pdf?index=trueIn PDF document text
    • https://5862e4ea-63a6-4c92-af93-e06d02d1a664.filesusr.com/ugd/eaa371_9918e4969026440dbdcc6d088a2c0c2e.pdf?index=trueIn PDF document text
    • https://8ed62699-7d02-4439-b935-4286882ef7d4.filesusr.com/ugd/229b11_6549341822834aeb80912f3b23b629a0.pdf?index=trueIn PDF document text
    • https://a1d1c4ac-cf1d-4c58-861c-45d1188f4b60.filesusr.com/ugd/052f3a_828a953580cf41abb0ca7b7dcab9d493.pdf?index=trueIn PDF document text
    • https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_579c1a33177d4ec19124dcac08a0cbb9.pdf?index=trueIn PDF document text
    • https://32cf4326-ba62-484c-a3ca-05d02c2dd2e5.filesusr.com/ugd/0b46e6_b17ec57e57ef4847b7e62ce4e5adf6d7.pdf?index=trueIn PDF document text
    • https://c546c886-5aa5-41cc-813f-4ed3e146772c.filesusr.com/ugd/b3e52d_bd2d651b7b174faba0dee564108ead44.pdf?index=trueIn PDF document text
    • https://e3c65705-3664-417e-97b1-2ac29bfab8bd.filesusr.com/ugd/6a5da5_01d85500d372458c88704c80d63f53df.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/39d073e1-a3db-489b-ad17-fc26b856047b/best_mutual_funds_for_2020_usa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a634afa-76a9-4cbd-b70c-b9ff843afc85/what_year_was_the_winchester_model_94_30-30_made.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF235 3048 bytes
SHA-256: d0351052b3a4e46a000bfd5ef9101e25525bd4872f1ecaf2c978e87aebf453f9
font_01_sfnt_off0000fcfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFE 4776 bytes
SHA-256: 818155b012453af6622bd2947a07ba3c2aa24642223e05903a0ed6e412b14cd5
font_02_sfnt_off00010cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF2 11136 bytes
SHA-256: 2b45f7a4778161bf47eac48b79a732ad48c9be92865d5668c75bb42ea6233b7c
font_03_sfnt_off00013294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13294 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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