Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd960a8aee8be79…

MALICIOUS

PDF

84.5 KB Created: 2021-03-30 05:16:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 654fee4f31537d3b6747f1eb9b5e16cb SHA-1: 2cd509b32c9aa4c65e0622f1e8d948184e6e9b91 SHA-256: 1dd960a8aee8be79c10f435feb547cece0cf600315515972bd0e70a90cf9d14a
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains an embedded URL pointing to 'bologen.ru', which is likely used to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to exploit user trust for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=salt+on+canker+sore+burns
    • http://ruxenawuxovogu.getenjoyment.net/spanish_to_english_translation_file.pdf
    • https://cdn-cms.f-static.net/uploads/4495040/normal_6025720040502.pdf
    • http://insuranceautousa.com/how_many_calories_are_in_sonic_shakesdasst.pdf
    • https://static.s123-cdn-static.com/uploads/4486566/normal_5ff4591f94e4b.pdf
    • https://static.s123-cdn-static.com/uploads/4454547/normal_5fc9dc93b609a.pdf
    • http://basvuruizleme.online/916953469440j68b.pdf
    • https://cdn-cms.f-static.net/uploads/4485810/normal_60265f3c23f26.pdf
    • https://cdn-cms.f-static.net/uploads/4366327/normal_60292dac1ca5a.pdf
    • https://static.s123-cdn-static.com/uploads/4415527/normal_5ff02548c1d0b.pdf
    • https://cdn-cms.f-static.net/uploads/4476924/normal_6042ed7605ada.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://vodadusilop.rf.gd/what_is_forex_in_simple_terms.pdf
    • https://uploads.strikinglycdn.com/files/0ff401c3-da2c-48d4-8246-be19f743a80b/when_was_oracle_19c_released.pdf
    • https://uploads.strikinglycdn.com/files/c665970a-7d22-446f-9265-0ecadb98cdc3/are_school_uniforms_a_good_or_bad_idea_argumentative_essay.pdf
    • http://bijamujijupife.epizy.com/bretton_woods_system.pdf
    • https://uploads.strikinglycdn.com/files/7d6ddf74-9a3c-4cf3-b2da-c1e73b9ccf21/ligisamasixujalidabijuf.pdf
    • http://fuvoxibid.epizy.com/exploration_radiologique_de_l_appareil_urinaire.pdf
    • http://jeximojela.myartsonline.com/772302069.pdf
    • http://rowebilit.epizy.com/genesis_3_15_catholic_answers.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_off000100b5.bin
3291ea67d6e4ebd092283b19cfb5055c3497cf6971c57566aed52132dedf2638
pdf-font-stream PDF embedded font (sfnt) at offset 0x100B5 4932 bytes
font_01_sfnt_off0001117b.bin
76124aa5e8ca8a3cbcf97419257d1ebbc094fcf368aa0f3afeb016bcd1139926
pdf-font-stream PDF embedded font (sfnt) at offset 0x1117B 10884 bytes
font_02_sfnt_off000136c3.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x136C3 4324 bytes