Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a58e60d49f2cd6f…

MALICIOUS

PDF

84.6 KB Created: 2021-05-23 09:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 012fdf6a0ed1d69368c0ea927bda6671 SHA-1: 19b162700c872e51c3a2b83da30ff0e3113917f6 SHA-256: 6a58e60d49f2cd6fe6fa6896df1155e90aecdb041942c96b2f56049722700d7f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search engine result for a common query, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. While no scripts were directly extracted, the PDF structure and embedded URI are typical of phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wb?keyword=what%20is%20the%20message%20of%20the%20book%20holes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485718/normal_5fda3aec80586.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410214/normal_5fcf336e942c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370768/normal_605fb2c948962.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387242/normal_5ffb80fad751c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369632/normal_5fd384e164fd2.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/woxotopapozokev/let_the_king_of_my_heart_bethel_chords.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fe507ae-5cc6-4c99-81c1-589465126bca/31272074931.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/55459105653.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/software_functional_requirements_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d59dfe9-faf0-4f9b-8a74-acc2f969942a/87794265803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9114e6c3-1a5d-41cf-88ed-8b65bb3d880a/surf_fishing_gear_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b69775cb-fe47-4247-ab25-11ff30a38fd5/similes_exercises_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d3ae6f8-5c47-42c4-b17c-c4bf06fef20f/lefewirepazuralunabegipu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c4e3ddb-3fae-448c-b9b8-48f3a8152e09/2602566882.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad856f9-a492-4b0b-a3f5-8af17521284a/thirteen_reasons_why_season_3_dvd.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/insight_ias_budget_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4afbfdb6-aad4-4333-ba94-08f2d55b7959/the_architects_studio_companion_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eaecf3f-c595-4e11-8ed6-a28defaac7a3/introduction_to_numerical_analysis_coursera.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/26829412168.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/noxosenixakilodolevebaz.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/dnd_5e_critical_hit_spell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e36fa0e2-9304-4118-a00e-9eb6d4507767/organic_chemistry_reactions_and_reagents_by_op_agarwal_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8d3b552-5afc-4f59-9983-d763c6fec719/zenizorivaze.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/67164427755.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bc2959c-0079-4532-8059-6e85010a933b/schopenhauer_the_world_as_will_and_representation_cambridge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f681623-ae52-41ed-bc89-7c1b72e19ae3/24438207322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88c4e5e2-eb89-4d6f-89ef-9afc9895279c/erich_fromm_to_have_or_to_be_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1cafbbd-55b4-455c-a22d-8899aa336aae/ryobi_router_bit_reviews.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_off00010f0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F0C 5300 bytes
SHA-256: 56154ab18ce3922285e3b43f5afa5ca54ca1c702a53a89d4985225ded5991d4b
font_01_sfnt_off00012106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12106 10368 bytes
SHA-256: e6e9003e1560f4f4ea646ebb63e1dbfd8a79d284f0838054e879b67d52ecc2c4