Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaa843e70752e7d3…

MALICIOUS

PDF

72.5 KB Created: 2021-01-02 11:39:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e9316a89ba94e3f2f5baea454d575540 SHA-1: e6e9e4b526c46ea14b40fd33e26665be0b3ff679 SHA-256: aaa843e70752e7d3ea2e8f503668fa984ce3b4f3b8a34a7a1b8d00a95abb0886
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggraff.ru, which is indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of a malicious URL within the document body points towards an attempt to redirect the user to a compromised site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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/123?utm_term=general+release+form In PDF document text
    • https://cdn.sqhk.co/kobamebexog/jdhejeg/42194543966.pdfIn PDF document text
    • https://cdn.sqhk.co/jevipugirofi/jdDPvge/edit_text_in_scanned_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/bedogipaxog/zgjhgpb/too_many_birds_in_one_tree_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/lakisitu/QfFibvA/kung_fu_master_2_stickman_league_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/zokoxirinuz/K5hiM7Q/soccer_star_2020_football_hero_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/ja7Wgdy/download_carx_drift_racing_mod_apk_ios.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/37d87421-51a8-419c-b061-add4a7b2236d/ziweporokoluxejapa.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/convert_cdf_to_r.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/zorewukoludejilarumolujo.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/26034261282.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/lisijebixulobupuruwodele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdcd0e12-8d5c-4171-8e61-8b5a4d66e57a/38581965612.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e23eaebb-66ac-4bc1-9fcc-17cf8cdd153b/amazon_prime_video_membership_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/8072232444.pdfIn PDF document text
    • https://s3.amazonaws.com/wisatutadi/origin_8_torqlite_chain_guide.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_off0000d4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F2 4604 bytes
SHA-256: 5b7b5e06a68b985247b0660863a1b947715cd899f85efbffccbc4d171c0dbc2f
font_01_sfnt_off0000e46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46E 10172 bytes
SHA-256: fd415c79ff79ade77021535fe6c902d61f87d3ba557612caa79ceb0e61736cda
font_02_sfnt_off00010741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10741 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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