Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bacd1916be9e7fc…

MALICIOUS

PDF

76.2 KB Created: 2021-03-30 00:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc26ae472aedd0890431e96144377c8d SHA-1: b440bad55bd715c92c91bb446fb74e339d008aba SHA-256: 6bacd1916be9e7fc7c2475f4691f2762ee7e42872dfcaa565aa14f5f0bacbfd9
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are to benign-looking PDF files, suggesting a link farm or SEO poisoning tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The primary malicious URL identified is 'https://resalured.ru/award?keyword=anemia+aplastik+anak+pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/award?keyword=anemia+aplastik+anak+pdf
    • https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/5e99a.pdf
    • http://jopekefepokideg.iblogger.org/instrumentation_amplifier_applications.pdf
    • https://lomofoxagut.weebly.com/uploads/1/3/4/5/134524577/b077f4a6bae83d8.pdf
    • http://sosuziba.mypressonline.com/acetilcolina_efectos_secundarios.pdf
    • http://pesuloduf.medianewsonline.com/cvce_words_worksheets.pdf
    • https://lorivomewojesab.weebly.com/uploads/1/3/0/8/130813497/8076359.pdf
    • https://desaboros.weebly.com/uploads/1/3/5/4/135400021/bowaba.pdf
    • http://liwokat.iblogger.org/sexual_orientation_list_uk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tovetetuw.rf.gd/wejivumenobaguxovosurejow.pdf
    • http://bitujiduruv.myartsonline.com/acidosis_tubular_renal_tipos.pdf
    • https://uploads.strikinglycdn.com/files/da260140-f13a-4143-9158-1b91731cd765/how_to_update_sky_q_box_to_get_netflix.pdf
    • http://zogaxemajov.epizy.com/chiari_1_malformation_and_ehlers_danlos_syndrome.pdf
    • https://uploads.strikinglycdn.com/files/b6b50b26-e3d0-4f60-ab14-0ca416415426/bedijuzanolamunamuvusoguz.pdf
    • https://uploads.strikinglycdn.com/files/074b61f4-b9af-471c-945e-17043c6e05d7/this_is_water_video.pdf
    • https://uploads.strikinglycdn.com/files/8459ed0c-bfc8-45a1-9178-0b85adeea43e/betupezokemarukuwopowos.pdf
    • https://uploads.strikinglycdn.com/files/7625a6bb-d78f-4582-8043-f82cc738c28b/xilezederusomo.pdf
    • https://uploads.strikinglycdn.com/files/ddb51098-7686-4492-97cb-fc9a3d7ffd6f/how_to_draw_isometric_view_of_hexagonal_prism.pdf
    • https://uploads.strikinglycdn.com/files/10db5cd6-2c40-434e-b71a-d62e57b5c438/sipolikevoxasujosadalo.pdf
    • https://uploads.strikinglycdn.com/files/947e6361-0446-455e-8d32-a09d006e39c9/uppababy_vista_v2_stroller_in_gregory_blue_melange.pdf
    • https://uploads.strikinglycdn.com/files/c4f4436a-0e9c-42d5-b304-25ae99972953/61451363525.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efc1.bin
8cc9ad215db69271b55a2437fc67c627e3fdbc9f23d67b508b71cfb73394b915		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFC1 5144 bytes
font_01_sfnt_off00010130.bin
1cd63d3dd23967a5a4da840880c3b74b143d480aae27be30f441dad6c53c4b5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10130 10128 bytes

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