Malicious PDF — malware analysis report

Static analysis result for SHA-256 e505095fdc269c75…

MALICIOUS

PDF

77.1 KB Created: 2021-03-18 01:15:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: cd8821c90adb62fdc03d50246902e1a6 SHA-1: c9e5cd2117ec65730fc5a14e15b49d208092f4dc SHA-256: e505095fdc269c756db7941b5ebd60109105b9845e5f70b895252aff80f532bd
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious content. The presence of an external URI and an SEO redirector link, specifically `https://botokaw.ru/wix?keyword=dsr+proseries+psj-2212+manual`, suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to a product manual, reinforcing the lure tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • 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://botokaw.ru/wix?keyword=dsr+proseries+psj-2212+manual PDF link annotation
    • https://cdn.sqhk.co/dikonutudibe/3T9CXjc/agreement_of_verb_with_subject.pdfIn PDF document text
    • http://cardioactiveufficiale.site/52332902599o1sne.pdfIn PDF document text
    • http://raladotid.22web.org/can_yeast_ferment_sucrose.pdfIn PDF document text
    • https://cdn.sqhk.co/bimowikosaru/KuNig11/25733280085.pdfIn PDF document text
    • http://kudukulid.22web.org/33025444221.pdfIn PDF document text
    • http://lamovingcompany.com/28961755229y6lqh.pdfIn PDF document text
    • http://housefashion.ru/how_to_get_certified_in_six_sigma_black_beltjr93c.pdfIn PDF document text
    • https://cdn.sqhk.co/vinogusi/hhajbja/dragon_models_1_6_scale_figures.pdfIn PDF document text
    • https://cdn.sqhk.co/nezupusovefi/dRlpggf/earned_value_analysis_questions_and_answers.pdfIn PDF document text
    • http://50offstore.info/buxisategetonuveluxudgnsyf.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/limewub/25114874903.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/pewexomedu.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/25315553086.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/diguwibajuramoteraxetigi.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/acer_aspire_one_kav60_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vebenok/how_to_measure_a_7_32_drill_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/how_to_play_uno_flip_on_switch.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/video_streaming_uc_browser.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/blank_gradebook_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/wuvepilamamuse/90656985405.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/aastha_tv_live_app.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/pogunubixukakigexeruz.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/19173581459.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EC 5256 bytes
SHA-256: 75796cce240d27156b216074bcab9aec2a92bb3b378d7293b268164e368d0259
font_01_sfnt_off0000f9c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C5 2076 bytes
SHA-256: 9a6721187980888d20c81fba675868500dfcfb63c6aaef9fdf6b81eef933b3b5
font_02_sfnt_off000102c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102C4 10588 bytes
SHA-256: 91755a10225c42f7c33cd621f04f4565f1ec671f50fb53a50c9ea662baadf4a9