Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d8c82d0e969c46…

MALICIOUS

PDF

80.0 KB Created: 2021-03-21 02:05:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b05981c6330474c4186750c630ce41f SHA-1: a01320db15ab26b978699545683f55e100d83043 SHA-256: 84d8c82d0e969c466f4382fed460087b86c988deb8c5d9c59812cbeb558c5fe3
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely used for phishing or malware distribution. The document body, though partially corrupted, suggests a lure related to 'Estructura de lewis para acido carbonico', aiming to trick users into visiting the malicious URL.

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
  • 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://xezojetit.ru/aws?utm_term=estructura+de+lewis+para+acido+carbonico
    • https://zugasunisozabij.weebly.com/uploads/1/3/4/7/134759734/ronitewotagubox_sozejijuf.pdf
    • http://lebizifijafaxim.medianewsonline.com/international_law_commission_2020.pdf
    • http://ibkreactiva2020.com/toefl_exam_sample_downloadw13mo.pdf
    • http://kompledom.com/asvab_for_dummies_20186soik.pdf
    • https://cdn-cms.f-static.net/uploads/4417024/normal_602526b7cc18e.pdf
    • http://befujukipepejem.mygamesonline.org/16773029508.pdf
    • https://cdn-cms.f-static.net/uploads/4393759/normal_6051fafa0ac1c.pdf
    • https://cdn-cms.f-static.net/uploads/4469136/normal_5fdb06fde527f.pdf
    • https://benipotuwazel.weebly.com/uploads/1/3/4/4/134445242/somojuw.pdf
    • https://cdn.sqhk.co/patizuruf/egi1CyU/bloomsburg_pa_newspaper_classifieds.pdf
    • https://cdn.sqhk.co/zibumimuw/gjjGhgt/74262785491.pdf
    • https://gazodajatara.weebly.com/uploads/1/3/2/7/132712558/nifofevozijo-fesunez.pdf
    • https://wivixape.weebly.com/uploads/1/3/4/8/134897282/5118753.pdf
    • http://lipenav.mypressonline.com/carbide_insert_chart.pdf
    • http://rarafon.iblogger.org/wubaxafefekemivoxufapod.pdf
    • https://javesuput.weebly.com/uploads/1/3/0/8/130873829/jeseduwigew-segad-diwiki-divam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wafowexo.epizy.com/wesirobeviwufu.pdf
    • http://duxurulokij.epizy.com/wusizujakofanaz.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df21.bin
e526113ac393441116cf7a02359a08586008f23bef5a747d1129f6548ebd49e4
pdf-font-stream PDF embedded font (sfnt) at offset 0xDF21 5256 bytes
font_01_sfnt_off0000f11c.bin
05481a4d5b51c809dd16117d244615bd2b4f5f9b46436989cd6d24e8e8d01643
pdf-font-stream PDF embedded font (sfnt) at offset 0xF11C 12984 bytes
font_02_sfnt_off00011b67.bin
d25a34a56be33791b66bd7dbe91ee772b39b89bee75ba0e64ef3ea6cb2c10b57
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B67 16260 bytes