Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa95190555b60906…

MALICIOUS

PDF

94.4 KB Created: 2021-03-20 04:20:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff1c07261cae6b4202ce732568a3ae83 SHA-1: 20ccab18ef68ebbd4b02d11d88d31187d01119b6 SHA-256: fa95190555b609068e1304e22e3bed015b9f82f9942d28d867f4f575b4d406d5
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with common phishing and malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xajibur.ru/wix?keyword=science+olympiad+protein+modeling+kit+2020
    • http://dujojiwasemob.mywebcommunity.org/rori_raye_have_the_relationship_you_want.pdf
    • https://cdn.sqhk.co/sirejeforox/hcTDThc/samsung_bootloader_unlock_tool_apk.pdf
    • https://kamutimasevukov.weebly.com/uploads/1/3/1/8/131856564/digupibupofufaf.pdf
    • https://cdn.sqhk.co/potebuso/cphfigG/92392031141.pdf
    • https://duzuvopewawufos.weebly.com/uploads/1/3/4/4/134491429/zodizifur-sezusa.pdf
    • https://cdn.sqhk.co/jeporikate/WGje7hj/24097479573.pdf
    • http://vumogegotawugub.mypressonline.com/diduwubun.pdf
    • https://vaxujorukub.weebly.com/uploads/1/3/1/0/131070318/5189884.pdf
    • https://palobakuk.weebly.com/uploads/1/3/4/5/134523632/2988323.pdf
    • https://vadiduriku.weebly.com/uploads/1/3/4/4/134445950/sasinogubofoxut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/gatazeromij/50465606542.pdf
    • http://kisezemewarajox.rf.gd/siren_blood_curse_trophy_guide.pdf
    • https://s3.amazonaws.com/pizexopenaxu/bubble_answer_sheet.pdf
    • http://xanuvajunozim.epizy.com/46582943962.pdf
    • http://jezujemoxube.epizy.com/wilton_tip_chart_1m.pdf
    • http://juvelanasamezu.epizy.com/18245994116.pdf
    • https://s3.amazonaws.com/dowavelaxam/causas_de_diplopia_binocular.pdf
    • http://malukofe.rf.gd/niwawadase.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_off00012650.bin
cc55eaa768d42e067556e5acba3c068d323e7c2a256d27296a527e28aefb7b91
pdf-font-stream PDF embedded font (sfnt) at offset 0x12650 5548 bytes
font_01_sfnt_off00013909.bin
b5df0e8943f20212baf4829514da269f5a0dcbcfe363bc291a5ad594f73099cb
pdf-font-stream PDF embedded font (sfnt) at offset 0x13909 10920 bytes
font_02_sfnt_off00015e4e.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x15E4E 4324 bytes