Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e836ea27841f28…

MALICIOUS

PDF

64.2 KB Created: 2021-02-16 23:43:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7cf5dd71957edfb85a76747e2c01db7c SHA-1: 5b8ed79b9c93911ac4bc8606581df73312cb00b6 SHA-256: 32e836ea27841f28771f9f7bd3f7fdbe3e559532f1a5f20cfd7e510319fadf84
194 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
  • 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.
  • 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=emerson+lc401em3f+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4450259/normal_60053888e1122.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415077/normal_5fe02b206c9ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485578/normal_5fc582db455c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426696/normal_602071b7a3842.pdfIn PDF document text
    • https://cdn.sqhk.co/mujutuzidip/0pb2803/yandex_translate_api_android_example.pdfIn PDF document text
    • https://cdn.sqhk.co/xugosovemi/gFigtih/58113608867.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488116/normal_60157a5f48091.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/ijfiagi/encyclopedia_book_set_price.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/giaUAIT/lufifukoviwuvufuw.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/ifjegce/weekend_jobs_near_me_teenager.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jazupizewatabal.epizy.com/life_is_strange_100_guide.pdfIn PDF document text
    • http://nirutavikuda.epizy.com/88538094568.pdfIn PDF document text
    • http://tajomum.epizy.com/sepak_bola_fifa_mod_apk.pdfIn PDF document text
    • http://mokimonanogi.rf.gd/mr_brahmachari_movie_songs_free.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_off0000bf82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF82 5428 bytes
SHA-256: 0ed3437b632c6c78a37862de0a1b9f00c3fe9bb27af684da0b07ddb49119dbad
font_01_sfnt_off0000d1eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1EB 10068 bytes
SHA-256: f431fe801c0f32c5258c38a007fc579214838ecddbb52ac2508ffd4e69844da5