Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a1b7fe0907fa6d0…

MALICIOUS

PDF

69.0 KB Created: 2020-12-04 10:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75539c9dcad47cab622ffec8ea6ed4ad SHA-1: 2dc6bb2b826c4b1d6082778f602b628fd65918d6 SHA-256: 6a1b7fe0907fa6d027511dbd4256484d6b43d712972d649c2186ea86f6d507b3
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically the URL https://traffmen.ru/123?utm_term=the+ethical+life+pdf+free. The ML classifier also flagged this PDF with a high probability of being malicious. While no scripts were extracted, the presence of a malicious URL within the document body suggests a phishing attempt to redirect users to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=the+ethical+life+pdf+free
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/3772b7e4-c810-4c30-b5b0-05150d22bf89/dunaz.pdf
    • https://uploads.strikinglycdn.com/files/68ed5006-6ef1-492d-b7b6-7f80788cc6bc/tamil_gun_hd_download.pdf
    • https://s3.amazonaws.com/sezebepit/ny_tlc_license_renewal.pdf
    • https://uploads.strikinglycdn.com/files/22c01bb2-7cd4-4229-89c5-868ebcfeb289/47296182153.pdf
    • https://s3.amazonaws.com/woxojuxafopuv/samsung_s20_case_otterbox.pdf
    • https://s3.amazonaws.com/wesezuzuvalirik/android_emulator_linux_mint_18.pdf
    • https://uploads.strikinglycdn.com/files/1186eec2-f1b1-4a17-9c93-69b9771e652d/lebosudebejolelebodov.pdf
    • https://uploads.strikinglycdn.com/files/e187943d-2ebe-42e3-afcd-bdc9aa6524e6/citi_field_bag_rule.pdf
    • https://s3.amazonaws.com/pozokimepe/kuweraromawutad.pdf
    • https://s3.amazonaws.com/wixikarago/letter_sound_worksheet.pdf
    • https://uploads.strikinglycdn.com/files/959a1b2e-96f3-4124-9e20-a18fb22b16af/28634343714.pdf
    • https://uploads.strikinglycdn.com/files/e37cb25e-59b4-4ec9-a88a-2e0002f95ff8/safivof.pdf
    • https://s3.amazonaws.com/dutuzanob/is_cao_and_ionic_compound.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5ce.bin
99a3e386edbf079fcfbc39a4aeebc1aee488db767c46885215bd861acca61028
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5CE 4588 bytes
font_01_sfnt_off0000d570.bin
453cacc4f1c88c73b147b889e9b06e46ecc2dddf3bb3f388ca370718c77a0084
pdf-font-stream PDF embedded font (sfnt) at offset 0xD570 10564 bytes
font_02_sfnt_off0000f950.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xF950 4324 bytes