Malicious PDF — malware analysis report

Static analysis result for SHA-256 e566361fa1aed34c…

MALICIOUS

PDF

73.2 KB Created: 2021-02-19 23:23:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ee2dd3a369d5509e6c7e9a6f16d3a230 SHA-1: d675191ccfd0978eb58f5973311c98d9b2de0707 SHA-256: e566361fa1aed34cc02e4dbe7cc8594ce0c903c71e0b4274fd1457d3c795b670
274 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/123?utm_term=netgear+gs116pp+manual In PDF document text
    • http://xigosilefonaboj.iblogger.org/rexasetolene.pdfIn PDF document text
    • https://tefovaxosu.weebly.com/uploads/1/3/1/1/131163863/fiveti.pdfIn PDF document text
    • https://lumekagaxegi.weebly.com/uploads/1/3/2/7/132712489/tubuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476146/normal_6019c68368123.pdfIn PDF document text
    • https://ribigitapupag.weebly.com/uploads/1/3/4/8/134887221/tujuremogizi_zofawumoxe_faferefisogip.pdfIn PDF document text
    • https://cdn.sqhk.co/navuwamas/hjxiHcL/wild_west_new_frontier_game_guide.pdfIn PDF document text
    • https://dapapakutuluj.weebly.com/uploads/1/3/1/3/131384169/dowijorabajak.pdfIn PDF document text
    • https://lujukote.weebly.com/uploads/1/3/2/7/132712447/revepafekisaram_vufab_zuluxav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487632/normal_5ffa9cc505ff2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416131/normal_5fc9f2293752c.pdfIn PDF document text
    • https://wifovusu.weebly.com/uploads/1/3/4/3/134312249/78becf8d0d805.pdfIn PDF document text
    • https://datotumegodipe.weebly.com/uploads/1/3/2/7/132740351/287966.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460682/normal_60003a46c8166.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/tutapaxi/14907348928.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/basara_heroes_2_ppsspp_android.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/surah_yasin_dan_tahlil_arwah.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/pikovavubuv.pdfIn PDF document text
    • http://lafonariki.rf.gd/amalina_tamil_video_song.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_off0000de87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE87 5312 bytes
SHA-256: af05a18247a10da80b843313edf53102ffc8d9783d8814dfbd944c284f277295
font_01_sfnt_off0000f093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF093 11716 bytes
SHA-256: e4e8a0fbd64a9910efa1d2729120fbc95d70f3096b85bdac35b3cc9b244a384c