Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebea66cc0c11bd37…

MALICIOUS

PDF

74.2 KB Created: 2021-01-03 12:56:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1e147446bab96f516df6545b0cc330ed SHA-1: 92fd6e173af58c7555531cd3b67d543c8ec390db SHA-256: ebea66cc0c11bd371841428a5763408f1a0986097901d25d63fc4d08f28a5e12
222 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ggtraff.ru/aws?utm_term=bowflex+max+trainer+m5+manual In PDF document text
    • https://duvupobilalef.weebly.com/uploads/1/3/4/6/134630448/duxaperipimodisebag.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxovunevo/njjUhhv/city_jogger_double_stroller_car_seat_adapter.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376098/normal_5fe51cc34eb99.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/brjaJhe/33443171376.pdfIn PDF document text
    • https://cdn.sqhk.co/mesodimeduje/ghbjghh/18627216829.pdfIn PDF document text
    • https://cdn.sqhk.co/mogidamiko/ic1him3/bomber_jacket_men.pdfIn PDF document text
    • https://cdn.sqhk.co/vigesiji/ibjgyhh/steel_and_flesh_2_mod_menu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/41da084c-c00d-49ba-ac60-07da54594ff7/41948987682.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/hoi4_fuhrerreich_germany_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/sobedejudoletarexefej.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/larotilisisakisonasinig.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/ansiedade_3_cimes_augusto_cury.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40F 5068 bytes
SHA-256: cb98a0feecf885b2eb545d2e076509003b4f3e212cce0e83321e84b33ea8194b
font_01_sfnt_off0000f552.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF552 11488 bytes
SHA-256: 3198fffa344726108643591fca98d754e47d34ee6caa5439715c310e24268348

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