Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3abe16e82d680f3…

MALICIOUS

PDF

68.0 KB Created: 2020-12-18 01:08:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bf53b03fe651b67fd6c1b4663f7ca0a1 SHA-1: 9ec73ed9a88d1edf9e6a5110436ff22e889f55ac SHA-256: a3abe16e82d680f34eb425b77f5ec6de99e7b0b6626e71c9b5b5b56eb84a1a4b
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 critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=inventory_report+odoo+8'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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://traffmen.ru/aws?utm_term=inventory_report+odoo+8 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375194/normal_5f8cc82c173e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379968/normal_5f8eaab32dfd5.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/gazijewevan/primary_resources_guided_reading_activities.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81f52f36-1d72-4e0c-8cdf-8ffc32741ff7/84712298426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d43405d-d2a4-4122-acd9-615ccba31a89/lifuvu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2df0a9c1-48df-4e5e-87a9-e087b343aa29/oru_adaar_love_full_movie_tamil_hd_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c68dc6c3-c703-4d41-9f46-27c3f75ccf25/69670006714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a79a2b-b73d-433e-80a1-ccafbbcc6bf6/tafawuluj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e3c3fc0-24a4-448b-b5ab-c49a48d17401/masquerade_korean_movie_watch_online_eng_sub.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/fokepe.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/77722218385.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/hulu_live_tv_channel_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/cartoon_animator_sheet_crossword_clue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93a1f45c-5813-4607-9cf6-1c3324abee67/44554664849.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c164f1e0-21b3-4da9-aba2-0f9c5c3ef34e/swat_physical_fitness_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8250537-611d-4ed9-bc85-b76f65ae3019/2013_honda_cr_v_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be7ff4cf-6ab2-4ce4-a775-8e3ccbbed38a/mamibibalulatowujeg.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_off0000ce3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE3E 4856 bytes
SHA-256: 9bb4f80b01b96719f13a48b4d8d139110661c01a5870a002575b3e184207adc2
font_01_sfnt_off0000def4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF4 10656 bytes
SHA-256: 9e21c07c8b8cddb8bdafad149490e0f59bb921d2033dde3f6bd75f517748adc0

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