Malicious PDF — malware analysis report

Static analysis result for SHA-256 10e365ae7ed3b06f…

MALICIOUS

PDF

82.5 KB Created: 2021-02-05 02:53:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d81d7a5f29251a43c5253ef91cf9519f SHA-1: 14a53434185ab0a94317b52134c173dab92ec78f SHA-256: 10e365ae7ed3b06f18b1859c3e5d40a89023a6e8e0305eaacd8dcc59e6fa9d1d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://baarspo.ru/wb?keyword=aix%20en%20provence%20tourist%20information%20centre PDF link annotation
    • http://boxberry-24.cc/14_day_keto_meal_plan_free26dqd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369909/normal_5ff6685637217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387704/normal_5fdd8d6946e98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366367/normal_5fe0358a9509c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450418/normal_5fe5459098db8.pdfIn PDF document text
    • https://rimuzomidaz.weebly.com/uploads/1/3/4/3/134353295/d2f3164655d.pdfIn PDF document text
    • http://brosbass.com/approximations_and_estimations70o3r.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/YLW58Hr/time_flower_plant.pdfIn PDF document text
    • https://fuwipinax.weebly.com/uploads/1/3/4/0/134016709/1886904.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500001/normal_600291d142c40.pdfIn PDF document text
    • https://cdn.sqhk.co/lerapuraroke/ggigxgt/kaxise.pdfIn PDF document text
    • https://jajibesuwazigix.weebly.com/uploads/1/3/1/3/131383486/1553331.pdfIn PDF document text
    • http://tirudibemaj.22web.org/kualitas_sumber_daya_manusia.pdfIn PDF document text
    • https://cdn.sqhk.co/dajusonas/vhgifgg/38933450093.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_6011e6ea1831c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001067e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1067E 5244 bytes
SHA-256: 495ae616906cb3393a87d19b579b309291ee99ae1e1a41631aafafac46f5bb81
font_01_sfnt_off0001184a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1184A 11284 bytes
SHA-256: 87f1da8d7e33b767d2ebe9412429b1ea409049531e909e451f13f52b2128e121