Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6bb1b7a0feed0d…

MALICIOUS

PDF

68.5 KB Created: 2021-03-01 21:56:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9f553e280976225123fafeaa2df6a97e SHA-1: 27424979fd36f33828bf40640be42cf2a75925ff SHA-256: 7e6bb1b7a0feed0d9890e1a980c4a59cc380d8a000b245000ca2e4eca1201a46
142 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://yafferge.ru/wix?keyword=acer+chromebook+15+cb3-532+charger In PDF document text
    • http://nakrutkavk.site/camera_app_free_for_pcd7qix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459318/normal_6019d15a99750.pdfIn PDF document text
    • http://seritepaxuv.22web.org/how_to_write_a_reflective_response_to_an_article.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/como_hacer_para_comprimir_un_archivo_en_winrar.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452587/normal_5ff361839f4c0.pdfIn PDF document text
    • http://dabutaxezopis.iblogger.org/autocad_civil_3d_tutorial.pdfIn PDF document text
    • http://pofaduxiruk.getenjoyment.net/does_super_shred_diet_really_work.pdfIn PDF document text
    • http://gokutep.22web.org/98038820775.pdfIn PDF document text
    • http://vomimaforotagi.mywebcommunity.org/how_to_put_strap_on_polaroid_onestep_2.pdfIn PDF document text
    • http://tijudozi.scienceontheweb.net/zowetemexajevadipam.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/wujapu/temporale_prpositionen_a1.pdfIn PDF document text
    • http://rusuditet.epizy.com/what_is_the_time_for_rehras_sahib.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/19333032290.pdfIn PDF document text
    • http://toraxetutat.epizy.com/proficy_machine_edition_7.0_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/psychology_books_in_urdu.pdfIn PDF document text
    • http://bawulega.rf.gd/suwanunajipezeviz.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/appositive_phrases_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/49132581276.pdfIn PDF document text
    • http://rolezudebozi.rf.gd/pirate_eye_patch_printable_template.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_off0000cd39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD39 5700 bytes
SHA-256: b38532085941641112800650de9144816d9053747552d9aa1c714fb5e5a9550f
font_01_sfnt_off0000e08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08E 10796 bytes
SHA-256: 1d1b65f092c4ce846b7f523a8a972b9e6771a0f34b0406e330de7865f1834dae