Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd203fd1c82c2ef…

MALICIOUS

PDF

72.1 KB Created: 2021-03-28 06:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 6951626fa0a86325853c8138fcaadb7d SHA-1: 07a9bd8103403fc5025c934cf61cc43594369f3b SHA-256: 1fd203fd1c82c2efaade7a2d29d85fad068e88ec93099868cd6d457ff0d84906
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one identified as a potential phishing or malicious URL. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to redirect users to potentially harmful content or facilitate SEO manipulation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://maypoin.ru/wix?keyword=minecraft+workbench+download+home PDF link annotation
    • https://cdn.sqhk.co/nuzitomizaj/jajbRHP/download_pixel_cup_soccer_16_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gapobuzijiru/ighajhY/75712226505.pdfIn PDF document text
    • https://cdn.sqhk.co/leluforeref/hajehhb/25445865865.pdfIn PDF document text
    • http://russianstravel.ru/can_you_use_the_wii_u_pro_controller_on_pck1odi.pdfIn PDF document text
    • https://cdn.sqhk.co/birugafomafo/dghYfPp/80769403736.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/hgjfEja/pdf_annotator_free_portable.pdfIn PDF document text
    • http://hhizmet.com/sibegetegunigivit5nk5.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/BcidqOI/jiwejumopisudolosesokez.pdfIn PDF document text
    • https://cdn.sqhk.co/tufuboloruj/jjjhbih/superhero_compression_shirts_uk.pdfIn PDF document text
    • http://slimitalia.space/93391612802q0rod.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/cdfd4a01-47ba-4ab2-998e-91c4a024c45b/what_is_the_biblical_meaning_of_the_name_raven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce6bbb00-78e8-41e6-ac92-05c35cba8f22/66853338405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4c85edf-5bc5-43c2-93a1-3d0fe7417079/coffee_yes_please_meme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13fa35f8-9c33-4587-ab23-e1c80e749a8b/amcor_portable_air_conditioner_kf9000e_troubleshooting.pdfIn PDF document text
    • https://cb8582fb-ab29-4f13-bfd4-623ca244ab52.filesusr.com/ugd/d61b30_5aea3cb3a9f1459e86707dc5d3438d77.pdf?index=trueIn PDF document text
    • https://e40da922-b0e4-44be-9878-2d4898ccab21.filesusr.com/ugd/3a38e0_149ebf79b4a7467e95dc1dacaa7103b4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f439c8c5-3ee9-4bf9-9c79-65291029485e/lefomuwiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6f76e17-da41-4a90-bd5a-d7afdb28db10/what_is_revelational_christian_ethics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffe31d6d-ac38-4172-a0b3-79fba9194764/visual_studio_2015_manual_espaol.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_off0000dbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF3 5384 bytes
SHA-256: ba200768254f4e7aa191558d871f2eead0d371b1d30b006e081f94d1df12a878
font_01_sfnt_off0000ee3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3A 10944 bytes
SHA-256: b005408a67b5ddf194fdb2ba8c67e8af503e8e04896b306a8762b7a9c84820f6

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