Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9cdf6120fac15a9…

MALICIOUS

PDF

46.0 KB Created: 2020-10-24 20:32:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: 9f2870710c86d0eaf94fbb10e74bbd9a SHA-1: 3c90e24b901d7d1ed2fe2a32e9d34b064c167fc0 SHA-256: e9cdf6120fac15a908e76b95a9242cae47f0096ba41bf8ddf2481c64e269af7d
142 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/strik?keyword=passengers+movie+hd+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4376372/normal_5f91f75c371c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387807/normal_5f903a63929e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368503/normal_5f89663d98e2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382960/normal_5f90484431532.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_5f88c605bc421.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007442.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007442.bin)
    • https://s3.amazonaws.com/xefejevife/vabimisexudatid.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/business_communication_skills_bba.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/past_simple_present_perfect_exercises_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/juduk/java_tutorial_download_by_sun_com.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5232626-7fec-4297-b84f-22dc3e95b227/65909966551.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95f45e06-8d34-4781-87bc-8eb981f398f8/73747715246.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28544dd3-2f50-4d9f-b843-545039e6893a/lilaxuxodel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f397cac1-1450-4699-98eb-d561d6e6b10e/kreg_pocket_hole_jig_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/calculus_volume_1_narayanan_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/5498129736.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/67083124765.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/bepabatagisevolago.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/physiology_of_wound_healing_process.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/hernia_inguinal_y_femoral.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/bifamigovevasoxomas.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/57224355972.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 extracted file (font_00_sfnt_off00007442.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7442 5392 bytes
SHA-256: db84073744f2097ac9da26f015dc7ec4a3f2eb3896099eab92c2cd9ed8e40a0e
font_01_sfnt_off0000867e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867E 10572 bytes
SHA-256: 85a0ce5b16f6200b3b4eec2193c5a6637816b2a7dc09d72a59084c14110dac59