Malicious PDF — malware analysis report

Static analysis result for SHA-256 70aa49dedeb9e134…

MALICIOUS

PDF

76.4 KB Created: 2021-03-12 05:05:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: aadaecc61c991f0951c90db8807e1310 SHA-1: 54ccde48226493e639c8b8566c77759447cb2196 SHA-256: 70aa49dedeb9e1349310054eed93067658c7e11f09ef86409e6b5015b4211e92
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?utm_term=android+9+j7+prime PDF link annotation
    • http://bujaxodu.iblogger.org/40632168957.pdfIn PDF document text
    • http://fullstacket.online/hampton_bay_ceiling_fan_model_ac-552aqrezl.pdfIn PDF document text
    • http://complect-tech.ru/pupomifodiopsj3.pdfIn PDF document text
    • http://cleanup-sale.site/what_is_metaphysical_poetry_in_simple_words3kmed.pdfIn PDF document text
    • http://powerhdniy.space/pogom32405.pdfIn PDF document text
    • http://natikolom.site/3150538519517a9p.pdfIn PDF document text
    • http://uablog.site/15750057327omfev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444115/normal_60282bde3263a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495392/normal_60012a9e691a0.pdfIn PDF document text
    • http://arthromedro.xyz/asus_rt-n66u_repeater_mode_no_internetyta0i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387929/normal_60022252147c8.pdfIn PDF document text
    • http://smotrikino.fun/treasure_hunt_questions_and_answers_malaysiaxm2kz.pdfIn PDF document text
    • http://raifaisentgo.online/battlefield_board_game_rules6pvpk.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/81864cda-1ba8-4f41-9909-bc407d5459f4/the_game_neil_strauss_film.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/wasteland_2_damonta_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b704a23-cddf-4a50-a730-c420a19bec85/women_s_world_cup_soccer_2019_results.pdfIn PDF document text
    • http://xijivegopu.rf.gd/5175303467.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/xusinimulet.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/what_is_the_last_step_in_the_ethical_decision-making_process_group_of_answer_choices.pdfIn PDF document text
    • http://dozudaz.epizy.com/autosketch_mod_apk.pdfIn PDF document text
    • http://mesesoriran.epizy.com/definition_of_psychology_by_william_james.pdfIn PDF document text
    • http://pudilulajetelu.rf.gd/24290068418.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3447910d-c1a4-4da4-bbee-12c029a2be5f/nikon_coolscan_5000_review.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_off0000edef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEF 4984 bytes
SHA-256: 6662c29d3642cab2b69d54d1f355299967e4d4cea2e36c8485de4c68822de476
font_01_sfnt_off0000fee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE5 10956 bytes
SHA-256: fec1be8561b040718c0b057e18c18b5d471915058469608e6717a67cbe55c12a

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