Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fd079636d7c7b63…

MALICIOUS

PDF

84.8 KB Created: 2021-07-22 14:11:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e2de4fe53eda01a7c37ea095164b5f07 SHA-1: 010f6f638edefc78db1c124cadbf04d9ace6637e SHA-256: 1fd079636d7c7b630e228504393a73d934b5c1a34514e9a63703a8256d27b5c6
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains embedded URLs that likely lead to malicious content or phishing sites. The presence of PDF-specific heuristics suggests an attempt to exploit PDF viewers or deliver malicious content through the document structure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://feedproxy.google.com/~r/razvivatel/yapz/~3/gOBB6uaVNRA/square?utm_term=the+brook+infant+school
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f1167569d231202573398a/1626412661517/kezosevajomerafaxojoxof.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f1f4f647bf05569381d120/1626469622290/his_secret_obsession_free_online.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f7a1c625f0714c528a7fbf/1626841542584/nosenimunibozisipuxorizub.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8ffd12a6f785f5832ea63/1625882577338/jedidano.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60eda4bc3d37cd087e6d3d74/1626186940814/lapixuwiro.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60f8b9a28c7b33121df804b2/1626913186505/kikalafero.pdf
    • https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60f589b8c4d0d61e675285d8/1626704312385/bobikenukemikenu.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f21ad480d83038fa7591a7/1626479317055/mosesokolesozipebojif.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60e8eb822210ba6bce0f98f1/1625877378694/the_peer_and_the_puppet_read_online_free.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f608885c1cfb689610e3fc/1626736776158/4916366142.pdf
    • https://static1.squarespace.com/static/60aac4e0d5abe22cec5c4b22/t/60f19e3250bc4a336402c77f/1626447410992/reading__vocabulary_development_2_thoughts_and_notions.pdf
    • https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ee6220115d504d3a88ad0c/1626235424429/33645160696.pdf
    • https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60f7ddd46f916d6870209031/1626856917140/23711379621.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60e8a16450762b7c211d7e90/1625858404393/have_it_all_with_lyrics.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f40f42ec5ad00cc096d242/1626607426446/the_cosmological_principle_states_that.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60f92ed6f6b38207f73d6bd3/1626943190995/13398352124.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60f8649e0f14814b62281616/1626891423152/malignant_meaning_in_medical_terms.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f01b443015c64070cb0016/1626348356754/chinua_achebe_things_fall_apart_study_guide_answers.pdf
    • https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e952943f195e1e4037d507/1625903764164/sesobufekere.pdf
    • https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60f59c77f25173234b3bd567/1626709111867/nissan_350z_manual_for_sale_near_me.pdf
    • https://static1.squarespace.com/static/60aac4dd19f082755c4e5c69/t/60ee22f72a4cda17625c45ae/1626219256146/introduction_to_chemical_engineering_thermodynamics_8th_edition_solution_manual.pdf
    • https://static1.squarespace.com/static/60bf6cad3a95e91b59aa2418/t/60ec70182de9850677715ae8/1626107928637/funny_riddle_jokes_with_answers.pdf
    • https://static1.squarespace.com/static/60aac59fb7e9621e2f466549/t/60f3bd83860d895b482c8231/1626586499709/silurowuvolopavobujod.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://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_off0000e55f.bin
ab1190668cc16b9956a85acb420dbbc0e71e9facd1c0ba97553fb77119fbc1a7
pdf-font-stream PDF embedded font (sfnt) at offset 0xE55F 17368 bytes
font_01_sfnt_off00011335.bin
c1f0db75d2c9cc6c3c21259e8ec70001a974f8023378d879a29ec95b9a94f4da
pdf-font-stream PDF embedded font (sfnt) at offset 0x11335 10628 bytes
font_02_sfnt_off00012b7f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B7F 16792 bytes