Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac8df1633de71faf…

MALICIOUS

PDF

72.9 KB Created: 2021-03-02 16:54:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 198c6cde020d748662effaec01d13899 SHA-1: cc9793264ac92c9d3afdc52842ff06871162fb9a SHA-256: ac8df1633de71faf0d1926dd8b16d856d8d1ba8ee05e366a04ed63e8a9199fe6
136 Risk Score

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
  • 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://nipisod.ru/wix?keyword=gopro+hero+4+manual+dansk PDF link annotation
    • https://vibufimibe.weebly.com/uploads/1/3/0/7/130738819/c6ea85.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/how_to_pair_ps4_gold_headset_to_dongle.pdfIn PDF document text
    • http://wijofotezopadik.medianewsonline.com/world_of_darkness_character_sheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455399/normal_602d81cc24209.pdfIn PDF document text
    • http://derilezin.sportsontheweb.net/dsc_neo_hs2128_installation_manual.pdfIn PDF document text
    • https://womovenurobo.weebly.com/uploads/1/3/1/8/131872055/dd9771e8.pdfIn PDF document text
    • http://pimebujeben.66ghz.com/game_the_game_karne_ka_tarika.pdfIn PDF document text
    • http://tekirivira.iblogger.org/11648236566.pdfIn PDF document text
    • http://madagelilixo.iblogger.org/34729587992.pdfIn PDF document text
    • https://rumobenugata.weebly.com/uploads/1/3/1/4/131454452/setevoluwojogud.pdfIn PDF document text
    • http://dusibarupuguli.medianewsonline.com/62047052826.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/gaponigizax.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/cushman_and_wakefield_dublin_office_report.pdfIn PDF document text
    • http://pikuvideposem.epizy.com/mivizinagelasedabitizamen.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/4883173699.pdfIn PDF document text
    • http://viganoxoloni.rf.gd/pemeluvonikogasun.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/pokilinaruxewonudilidulu.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_off0000e0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F8 5384 bytes
SHA-256: 05d8f2e0ad0b480f174ea5f5d3444798a1f09ea888f0e1e9b470522161c81a63
font_01_sfnt_off0000f31a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31A 10348 bytes
SHA-256: 7302661f6d7954f580262d2f9d44bb3b3cf52b1041cde5df1c1e7335b4ab0e28