Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3986172289959f…

MALICIOUS

PDF

73.4 KB Created: 2021-03-20 20:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec09dceafc92022bb90d212b95d91ab9 SHA-1: 88fea0da22526cafa827e7ddc55695453ef8fdd8 SHA-256: cc3986172289959f582235048499eff1006ef0083a59487e207a77c8eaae943e
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to PDF conversion tools. The presence of embedded URLs and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • 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=pdf+to+word+converter+online+free+no+download
    • https://cdn.sqhk.co/nasanoroge/hV5yiar/81629410371.pdf
    • http://yatvoyya.fun/linear_programming_word_problems_worksheet_iit3ho1.pdf
    • http://milanomoda-italy.website/mazizidopeluvuxefijosl2so.pdf
    • http://bbcua.site/16484739613gf1yr.pdf
    • https://cdn.sqhk.co/vaminika/8HjbCjg/next_call_of_duty_zombies_2020.pdf
    • http://deutschebank-meine.com/jopazumopomesujamu00r31.pdf
    • http://indohealth365.online/19054472148mnriw.pdf
    • http://znasila.ru/samsung_un40j5200af_specificationsabxw0.pdf
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5fd0f7f116049.pdf
    • http://sodalabs.pro/88094430206jny7b.pdf
    • http://kuviruvada.getenjoyment.net/ejercicios_aumentativos_y_diminutivos_4_primaria.pdf
    • http://itclick.pro/kuxemewobanofofomuueo33.pdf
    • https://cdn.sqhk.co/dasisogi/xfhgvjc/alienware_laptop_giveaway_2020.pdf
    • https://cdn.sqhk.co/vafodagusun/efNibjd/file_manager_download_apkpure.pdf
    • https://cdn-cms.f-static.net/uploads/4474752/normal_5fe9c56724eca.pdf
    • http://onatural.space/karma_junit_reporter_not_working12j7p.pdf
    • https://cdn.sqhk.co/xozakatupab/qiahhif/xurijeboxabe.pdf
    • https://static.s123-cdn-static.com/uploads/4486034/normal_5fe23393c07bb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/8f432f05-daf4-4566-846c-bd8941276f35/what_does_the_number_803_mean_in_the_bible.pdf
    • https://uploads.strikinglycdn.com/files/190601ac-61fe-44df-8bb8-6f7dbd1979da/2455743679.pdf
    • https://uploads.strikinglycdn.com/files/8aa109fb-05d0-46a1-b25a-8c93a5e3e104/how_to_tell_what_size_bobbin_you_have.pdf
    • https://uploads.strikinglycdn.com/files/83020557-5aca-43f0-9fe3-f35257c84b83/kiera_cass_the_selection_series_book_order.pdf
    • http://vulopekusape.atwebpages.com/focusrite_scarlett_2i2_3rd_gen_price_in_dubai.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_off0000dee7.bin
67ae239f1308701ed0805decaf77ba59f24206083e18ab26d76aae489eeebdfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDEE7 4992 bytes
font_01_sfnt_off0000f00b.bin
eb64e3580ae16fdc04392677a373d152e2a3c72a9018bbc13428d54b8aa05a88		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF00B 12300 bytes

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