Malicious PDF — malware analysis report

Static analysis result for SHA-256 d48988fa70275210…

MALICIOUS

PDF

101.2 KB Created: 2021-04-28 15:51:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 5ea8da650a2e1f081000854219b76366 SHA-1: 426a55117c86a7404e39bdf9c7bab52a72a57e50 SHA-256: d48988fa702752102b057489151b28f9f17c554e81912c51b96fd0fe89530441
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is identified as a link farm on disposable hosting, strongly suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the heuristic findings indicate the document's primary function is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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 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://pelibifir.ru/strik?utm_term=another+word+for+ex+employee PDF link annotation
    • http://prodson.fun/how_to_analyze_financial_statementsynkyt.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/wooden_toy_truck_plans_freebnio5.pdfIn PDF document text
    • http://dutov.org/frigidaire_appliance_repair_partspv5to.pdfIn PDF document text
    • http://yoga-italy.space/pumorumukasazabbnavz.pdfIn PDF document text
    • http://pixujuxe.mypressonline.com/biwug.pdfIn PDF document text
    • http://tamasolesodaj.mypressonline.com/bare_necessities_sheet_music_free.pdfIn PDF document text
    • http://insuranceautousa.com/vevufixamujomajiselbaib0.pdfIn PDF document text
    • http://flowerport.market/24439689390ilp6s.pdfIn PDF document text
    • http://lnstagramcentre.net/winchester_model_12_youth_pump_action_bb_gun_newq2mmv.pdfIn PDF document text
    • http://playmarket-online.com/epson_scanner_gt_s50_01_errordmm5e.pdfIn PDF document text
    • http://vegofejolafud.mygamesonline.org/65516249922.pdfIn PDF document text
    • http://bella24.xyz/first_course_abstract_algebra_7th_editions1iod.pdfIn PDF document text
    • http://igonlinesupport.com/banutenowajipumjsyb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/be7ccb50-6916-4ea4-b046-f6840e86fc58/delta_shopmaster_10_miter_saw_blade_change.pdfIn PDF document text
    • https://c504e2ef-f928-4e80-b5b1-fc05046f432e.filesusr.com/ugd/247f25_85c7b88a28f64c439623b5059a64d08b.pdf?index=trueIn PDF document text
    • https://3794eb9c-cc8b-492c-aecc-44533f76aaa6.filesusr.com/ugd/1ee69b_0b1e5fbdcc4e481f9b3cdfcce19aad76.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd2bc836-630b-436d-9e5c-b542c4bcc85e/4797593268.pdfIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_bb906d4be5424fadb372b937a4aa8ccf.pdf?index=trueIn 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off00015add.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15ADD 18176 bytes
SHA-256: cf01bc0f4988446dccedefc74b2e18f75f5a4db52223d49ae4d5ad8e3f5c05f1
font_00_sfnt_off0000d61a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61A 5684 bytes
SHA-256: b860fb277252ee9b20429d811032d938c2d219a75430a49174b6e9a82640b652
font_01_sfnt_off0000e9f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F7 5144 bytes
SHA-256: 1f4d9d686da21795451c1644916f8c8c5b2b89d4898f981311e4474108a2bbeb
font_02_sfnt_off0000fb68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB68 2656 bytes
SHA-256: c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde
font_03_sfnt_off0001066e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066E 2328 bytes
SHA-256: 3702365b3034b9d7945da23b991b5e2ac3f8bb06d1ba3be7e5ba1b5d8dd48c9f
font_04_sfnt_off00011125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11125 2108 bytes
SHA-256: e66bd646ff29f48b94a898642357a1d5295b77faffa0bd70eb77acb4aebc9a97
font_05_sfnt_off00011af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AF1 6640 bytes
SHA-256: eca62b72654736461a635ba366d09d794777fd95c58152d2b251becdfce657e0
font_06_sfnt_off00012c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C8E 15208 bytes
SHA-256: 88fd4e0fc213dfa27bc9b58594fadaf3aa4e109b9281150fd4cb9cd01243fb7c
font_08_sfnt_off000177a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177A9 3276 bytes
SHA-256: 51c1d5fa29146058fbc649eac7766b85490f6942bd67486bd14cc46e9087474c

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