Malicious PDF — malware analysis report

Static analysis result for SHA-256 48d0a3d9d025423f…

MALICIOUS

PDF

71.4 KB Created: 2021-03-04 00:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 15b6bce05edee480b472816f1f793ae3 SHA-1: 80dfe00ada2762f36acc26e8a2adcec60c3fdca9 SHA-256: 48d0a3d9d025423fd737dec9039ed8e5aee98a96541d1b2df071be53e5dadf3b
194 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
  • 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/award?keyword=how+do+i+know+when+my+evod+vape+pen+is+charged In PDF document text
    • http://foodguideblog.com/skyrim_how_to_keep_a_stolen_horse9ks0f.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/jakinosej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410415/normal_5fe890ac1108b.pdfIn PDF document text
    • http://fimewot.xyz/28113462725anzpx.pdfIn PDF document text
    • http://toworugesolur.getenjoyment.net/how_to_check_post_office_account_number.pdfIn PDF document text
    • http://finansi-7.online/lagu_hanya_rindu_tanpa_lirik2s69n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_603c7fcea8d34.pdfIn PDF document text
    • http://erogan-columbia.site/how_to_adjust_pfister_shower_temperature8f5wm.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/similarities_between_impressionism_and_expressionism_art.pdfIn PDF document text
    • http://ejinaya.com/jar_of_hearts_pianovokjf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379849/normal_600cf0233db01.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/gazitif/merexedevujavuwa.pdfIn PDF document text
    • http://novogizeboje.myartsonline.com/why_is_the_dryer_not_drying.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/a_smarter_way_to_learn_python_github.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/70133739903.pdfIn PDF document text
    • https://s3.amazonaws.com/woxotopapozokev/sido_bilder_im_kopf_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_off0000dab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB4 5732 bytes
SHA-256: fffcf1c761d27bce76c4893b209acb539ce267ebe1206cf7f42ac103867996c4
font_01_sfnt_off0000ee2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE2B 10096 bytes
SHA-256: b544016bdfc042bda6200b6e6db8e9d6632cd376941802ee112dbde7a8b79c24