Malicious PDF — malware analysis report

Static analysis result for SHA-256 041850268b810e22…

MALICIOUS

PDF

87.7 KB Created: 2021-04-08 02:57:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 692e31d43593d9eeeead91bc2f4959e9 SHA-1: d8ba9392091fc7bb5a26a6368deb1ab3df4c62fd SHA-256: 041850268b810e220ee80214c4a648e848c1fab99f4a0c5828073b55b919ed5d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant portion pointing to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. The document body, though heavily obfuscated, suggests a lure related to job applications. The presence of external URIs and the ML classification strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://vilenefex.ru/123?utm_term=mail+format+for+job+apply
    • https://ripegedabezigiz.weebly.com/uploads/1/3/2/6/132695689/2080680.pdf
    • https://vifozafep.weebly.com/uploads/1/3/1/4/131407061/dc3e8.pdf
    • https://pizitejipadutim.weebly.com/uploads/1/3/4/4/134469061/xipabosusuvatugi.pdf
    • https://teliwunamadawab.weebly.com/uploads/1/3/1/3/131381891/9566460.pdf
    • https://cdn-cms.f-static.net/uploads/4379477/normal_604359c0c4fbb.pdf
    • https://static.s123-cdn-static.com/uploads/4475570/normal_5ffa7402addbd.pdf
    • https://cdn.sqhk.co/wularumijif/Ijejcie/basizelemiwakojizi.pdf
    • https://cdn-cms.f-static.net/uploads/4461232/normal_60608e93628cf.pdf
    • https://cdn.sqhk.co/refowofiros/Didg3kQ/bass_guitar_flash_cards.pdf
    • https://cdn.sqhk.co/xujurovemu/prhhO2m/diadora_shoes_near_me.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/kelukakeb/is_the_2010_mustang_gt_a_good_car.pdf
    • https://128fc002-9ed4-4a8f-9a6b-83b43563a9ed.filesusr.com/ugd/6812d7_3f3e26a6282c4cb783c3dafb0cdf0198.pdf?index=true
    • https://s3.amazonaws.com/lumixi/bisugorozewatekutavoj.pdf
    • https://cb0508fd-2a1f-4901-a161-a76823ee8e4f.filesusr.com/ugd/52013e_6dbca45019a949bca8367846dd7b422c.pdf?index=true
    • https://s3.amazonaws.com/buxoparadazegu/undertale_theme_song_sheet_music.pdf
    • https://s3.amazonaws.com/vonutavekip/carbohydrates_food_chemistry.pdf
    • https://s3.amazonaws.com/pazatuv/50678927369.pdf
    • https://s3.amazonaws.com/pegozegi/android_9_root_odin.pdf
    • https://s3.amazonaws.com/nakuzafol/metro_2033_redux_review_gamespot.pdf
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_fd174bede10640d3ae60d5cbf1c2c5a9.pdf?index=true
    • https://s3.amazonaws.com/bejexe/netherland_dwarf_rabbit_rare_colors.pdf
    • https://91e55214-10ad-44cf-a10a-60a9392df58b.filesusr.com/ugd/e1c37d_49552bcb8bb544e4bec6d1bcae293c28.pdf?index=true
    • https://626fb5af-1d67-41cb-86ce-204163677ff0.filesusr.com/ugd/9d869b_b5627af16711494ca6102a099b7e2a85.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f49.bin
4e5726e8e7ed813a5301d5b01c9b1bb11040e215fc1eb65a205289e11c5f5cf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F49 4756 bytes
font_01_sfnt_off00011f73.bin
41bf687bc0ed3b123b9b609f769a0dfe1ac9e6c48d466fa04f0d9bd43f933e11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F73 10472 bytes
font_02_sfnt_off0001431b.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1431B 4324 bytes

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