Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0957d35b4c04249…

MALICIOUS

PDF

72.7 KB Created: 2021-02-17 18:08:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: afa8aa5d23c9b8ecc228698b222175c3 SHA-1: de11ddc25ead31e02c217acbe8f6937e130f478d SHA-256: e0957d35b4c04249955f4e6db48636096bd571bab57130582e1f4b284ec5e1c8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/aws?utm_term=john+petrucci+rock+discipline+pdf PDF link annotation
    • https://cdn.sqhk.co/gogerazina/bgdicyx/halloween_horror_scary_sounds_and_music.pdfIn PDF document text
    • http://vbruti.site/devevefenarovugosozgurc.pdfIn PDF document text
    • http://sputnews.com/46685369015tezs8.pdfIn PDF document text
    • http://mabapip.22web.org/vogebidefewutavibamusufo.pdfIn PDF document text
    • http://fineagencyy.com/is_gdp_a_good_measure_of_economic_growthncmur.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/f2ObXic/ritavolerutukavag.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/jhf7zgf/colorfun_monster_kaiju_coloring_book_free_printable.pdfIn PDF document text
    • http://crispyset.online/vepigapaket0gvi7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://biforobajimebug.epizy.com/suvuxuroradepu.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/bogupalajej.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/beaver_uniform_badges_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/background_blur_software_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/dibulatoled.pdfIn PDF document text
    • http://povagemu.rf.gd/gowizosife.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/44664445634.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_off0000e01a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE01A 5084 bytes
SHA-256: c95df0fbda24afea9e5d578eb059d83bfbe147362b53ce8f85fd6f7ff6df8b2c
font_01_sfnt_off0000f161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF161 11248 bytes
SHA-256: 4606a752ac27cf3f7accb1ff875b7a463997817f466ce661e1fae9307cc1934d