Malicious PDF — malware analysis report

Static analysis result for SHA-256 08912c5bcade8e40…

MALICIOUS

PDF

76.0 KB Created: 2021-03-13 14:54:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0402e83be0142b3197ef16247d17ad40 SHA-1: 7d62db97cebd8bf74b32b841709a31a614781739 SHA-256: 08912c5bcade8e40e55119753a2e2e117b7b9b886b92fa67eeb24d8d62f7abdd
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/wix?keyword=mini+militia+mod+apk+free+download+latest+version In PDF document text
    • https://dofafurubes.weebly.com/uploads/1/3/4/7/134762343/duruzeromoxikesam.pdfIn PDF document text
    • http://gtmedis.com/6360565327vxkfp.pdfIn PDF document text
    • http://xilexevu.scienceontheweb.net/bsa_merit_badge_list.pdfIn PDF document text
    • https://cdn.sqhk.co/mofekuma/KhaMjjh/snowflake_stock_price_prediction_2020.pdfIn PDF document text
    • https://bemisawu.weebly.com/uploads/1/3/4/7/134716701/b99a6076bce.pdfIn PDF document text
    • https://gupamawuma.weebly.com/uploads/1/3/4/6/134602371/968175.pdfIn PDF document text
    • http://babblescoop.store/libro_top_notch_fundamentals_resueltou0645.pdfIn PDF document text
    • http://tegor.xyz/9896265578752u5u.pdfIn PDF document text
    • http://atlas-copco.su/86015618303569qq.pdfIn PDF document text
    • https://cdn.sqhk.co/wikaraxixi/ghhbMgc/44590650689.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/HBib8id/fowenokil.pdfIn PDF document text
    • http://jiwabozaxexe.mypressonline.com/62449745715.pdfIn PDF document text
    • http://siankaanmexico.com/vexokalad97q9p.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/nodetuxapabara/xipumugupoxevukar.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/76606272606.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/witafevefoxafez.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/28099666552.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/rch_asthma_guidelines.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_off0000e9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D1 5408 bytes
SHA-256: 49f86a85ca13a860b3248848c7fe9f339525348d9fe13025fc79a2fcfe26c6da
font_01_sfnt_off0000fc45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC45 11288 bytes
SHA-256: 7dc7c3e59749525841c7061c2d4b43abca8fd403c7f28e0f814a20a9c2dfb163

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