Malicious PDF — malware analysis report

Static analysis result for SHA-256 02627ce955826705…

MALICIOUS

PDF

74.5 KB Created: 2021-03-13 17:07:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 7b50a995ed7481251394524b9101a6c5 SHA-1: f494920964cec8a80a8afeb9dde5bc77bbcd8405 SHA-256: 02627ce955826705df0add31a95d46af1f6a24ff46ffbf617ea8d90785bfada0
66 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or scam attempt. The ML classifier strongly indicates maliciousness. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a lure to download further malicious content, likely a phishing document or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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://resalured.ru/award?keyword=rcm+business+plan+pdf+download PDF link annotation
    • https://cdn.sqhk.co/wugotiparo/ihgviag/52449674870.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489588/normal_60354584e8940.pdfIn PDF document text
    • http://drive4mclaneaustell.com/lawixuloziwevodiwxyyia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484999/normal_5ff8b96395c5b.pdfIn PDF document text
    • http://reabook.online/54496152989qbstu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424341/normal_6044c97d0d799.pdfIn PDF document text
    • http://xasumemazekejo.scienceontheweb.net/xafobixeduteradakavunaku.pdfIn PDF document text
    • https://cdn.sqhk.co/jawuraxexije/mI97hd0/connected_investors_exchange_reviews.pdfIn PDF document text
    • http://jedusajinud.mygamesonline.org/how_heavy_is_a_4x4_round_bale_of_hay.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502246/normal_6032a912bd7c1.pdfIn PDF document text
    • https://cdn.sqhk.co/jojikoxazew/xjigiHE/situation_analysis_report_example.pdfIn PDF document text
    • https://cdn.sqhk.co/mesafovojifo/YvihjvW/78658294725.pdfIn PDF document text
    • http://outputqwvk.space/beats_studio_3_wireless_headphones_black_fridayn8hng.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/66de6b24-3c3f-4412-acae-da6609302e04/napefiperumumojixafuna.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68c93145-2606-48ae-bd82-f9421bac0858/95894486697.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ffb972e-0d8f-4d8d-86b8-429da0bebef3/jinoweruwavub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc0d106a-e0c3-4c78-b65d-ed44300646f4/is_there_a_sequel_to_one_of_us_is_lying.pdfIn PDF document text
    • http://kugukokoner.myartsonline.com/35724374654.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d6d2407-82c7-49b3-9cb9-4e903fe27ace/83901095700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ccc8da9-9384-447b-b67e-375f8701dd51/how_to_setup_voicemail_on_nec_phone.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_off0000e0b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B4 5444 bytes
SHA-256: abf2966c1f14da2499216fdda3bebd4b8881cbf37a8f3f3e78b863f4f248887e
font_01_sfnt_off0000f33b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33B 12768 bytes
SHA-256: 984da3476286bd7899830a88eaa071490c8c08fa8bca363d377fc472e2f4bb77

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