Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a13a40940b7178…

MALICIOUS

PDF

74.0 KB Created: 2021-03-16 11:11:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 396a29809ca8361f999d6b495136f18f SHA-1: d3d29d09cdd0597e6d9780ee69e25dd296e37a21 SHA-256: 05a13a40940b7178f8dbfbf0b59d6909bd6cb5262827daecae9673feaaeea476
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with the primary one being 'https://resalured.ru/wix?keyword=nighthawk+carbon+monoxide+detector+manual+kn-cop-dp', suggesting a lure related to a product manual. The presence of external URIs and the overall detection profile point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/wix?keyword=nighthawk+carbon+monoxide+detector+manual+kn-cop-dp
    • http://wifunagidoli.mypressonline.com/56259010574.pdf
    • https://cdn.sqhk.co/lerepetoni/hicia8T/hockey_all_stars_mod_apk.pdf
    • http://zuzatew.medianewsonline.com/duzofilurenuwadiveposiv.pdf
    • http://albatros-trans.ru/oppo_103d_4kdcnrn.pdf
    • https://cdn.sqhk.co/sisadenev/dFjejii/tasufu.pdf
    • https://cdn.sqhk.co/xederebat/vhf4Cgf/9525763462.pdf
    • https://cdn.sqhk.co/pixorikibam/jckHieY/vusorowepixusulameri.pdf
    • https://cdn.sqhk.co/dejegekonula/gcia7jf/mandated_reporter_nyc_doe.pdf
    • https://cdn.sqhk.co/wukomidekepu/AApZxgj/dexiwigumoxolelikefamogo.pdf
    • https://cdn.sqhk.co/gabebutiz/TxjesxX/sodedugigem.pdf
    • https://cdn.sqhk.co/jabosuve/ihYjcKE/45053733629.pdf
    • http://tuxesimufimiti.mypressonline.com/36117112819.pdf
    • http://idealica-italiaofficial.site/theres_no_such_thing_as_a_dragon_online_bookbu28i.pdf
    • https://cdn.sqhk.co/jaselavujuwi/jG3wnjf/pandemic_ebt_ky_application.pdf
    • https://cdn.sqhk.co/toxodabatot/mrUSCjh/gestion_du_personnel_d_une_entreprise_commerciale.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tumuzu/xusurizo.pdf
    • https://s3.amazonaws.com/gawabog/9977730108.pdf
    • https://s3.amazonaws.com/gifojuxaxeva/nularireduximolozopikegi.pdf
    • https://s3.amazonaws.com/folexapurilowe/86542906018.pdf
    • https://s3.amazonaws.com/folexapurilowe/40874639394.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfb6.bin
0e35a85009a348f0671fb0bf58f570b9a5e34ac65cd37783a4d82f28cb7cde4d
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB6 5676 bytes
font_01_sfnt_off0000f2fe.bin
6b2e0b68cc599d9db3f538e03f094e960116ff1dab5e1f2efb54130e6e343118
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FE 11048 bytes