Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa2c98d539f25477…

MALICIOUS

PDF

69.7 KB Created: 2021-02-19 13:11:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 40e0028d6895670dd2b03e9e22d4b826 SHA-1: 414e4d029598486cda4ade79c532462f1082c4d9 SHA-256: aa2c98d539f2547738d9c082d6d4233094cb42d8a9242915a5c2477f92f142e1
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/aws?utm_term=usps+priority+mail+international+tracking+outside+us PDF link annotation
    • https://cdn.sqhk.co/kuzaxepigi/djeyAob/fetesutazoz.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/jfhjihi/tirewufalomal.pdfIn PDF document text
    • https://wegonugu.weebly.com/uploads/1/3/4/0/134040733/sidibipa_rafogalizuze.pdfIn PDF document text
    • https://wuguxobexo.weebly.com/uploads/1/3/0/7/130739488/3798545.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/h5U5gft/reginevir.pdfIn PDF document text
    • https://walasopi.weebly.com/uploads/1/3/4/5/134588780/pupaloxanojuro-mogusiro-pegusul-kifuderida.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392668/normal_600818f18152c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5feb25c6c5a3b.pdfIn PDF document text
    • https://xusopulude.weebly.com/uploads/1/3/1/0/131070786/2456570.pdfIn PDF document text
    • https://sizelelam.weebly.com/uploads/1/3/4/8/134867910/wusibulopilekosi.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/zukogi/bichagadu_audio_songs_now.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/string._format_null_value.pdfIn PDF document text
    • http://kunizifafam.epizy.com/beyonce_broken_hearted_girl.pdfIn PDF document text
    • https://s3.amazonaws.com/jadere/integrated_math_2_answers_key.pdfIn PDF document text
    • http://nijunopuk.rf.gd/waybill_dhl_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/rogalop.pdfIn PDF document text
    • http://gugogedufos.epizy.com/agile_uat_test_plan_template.pdfIn PDF document text
    • http://jaforafonox.rf.gd/java_for_linux_32_bit.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_off0000d352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD352 5548 bytes
SHA-256: 0963acc31fe0234fed8cf2dbaa2a6be42a7cf17623051d3dda1f8b93c41e82b9
font_01_sfnt_off0000e621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE621 10340 bytes
SHA-256: 5e5eda97d388e888634c090efa2b5f178b5aaca8e85cbe543c01b15c44f8e733