Malicious PDF — malware analysis report

Static analysis result for SHA-256 891775f04ec5042b…

MALICIOUS

PDF

128.2 KB Created: 2021-03-20 06:09:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f0f3995cf4713d9c454415e867282c7a SHA-1: 492a61b7172dab2435b8518b96381be1de214efc SHA-256: 891775f04ec5042b62ba3879b71bc5caf8ce0064dad56e8fa98c9c3edf710f66
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 an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, but the presence of external URIs suggests an attempt to lead the user away from the current document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://leonvi.ru/strik?utm_term=soundarya+lahari+slokas+in+sanskrit PDF link annotation
    • https://cdn.sqhk.co/puvegipuros/ghfhiha/36508058040.pdfIn PDF document text
    • http://bcpzonasegurape2-viabcp.com/how_to_fix_canon_p23-dh_vy1f25.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/hgijsjd/74687830332.pdfIn PDF document text
    • https://cdn.sqhk.co/bofilewidil/Xr7YAjJ/10_band_equalizer_settings_for_rock.pdfIn PDF document text
    • https://cdn.sqhk.co/novimabe/ogekxij/94723748973.pdfIn PDF document text
    • https://cdn.sqhk.co/kidurukazag/Un02Tjd/glass_smash_sensor.pdfIn PDF document text
    • http://5coupons.info/the_shack_wings_promo_codefude5.pdfIn PDF document text
    • http://denizan.com/604686007816p69.pdfIn PDF document text
    • https://cdn.sqhk.co/womafafowix/cUsaFib/zemalidupoga.pdfIn PDF document text
    • https://cdn.sqhk.co/fufigavaki/3icjchj/free_arkanoid_games_full_version.pdfIn PDF document text
    • https://cdn.sqhk.co/lesepivir/1aHVhjR/26596152970.pdfIn PDF document text
    • https://cdn.sqhk.co/vawapisoxe/7EhgRgd/jeep_gladiator_3d_model.pdfIn PDF document text
    • http://firstdoctor.xyz/xozofeeoa6x.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jivala/17430860715.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/deciphering_morse_code_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/beauty_games_android_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d7825ef-d2b0-4eab-bb82-d79f09b8e837/93463633790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a28dffb-bf3f-42b5-adb2-5a407cbe0921/how_to_reset_chimes_on_grandfather_clock.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/folipisexufosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f4d5a7e-d381-48d3-a5f2-d53b534a28b2/2005_cadillac_cts_v6_0-60.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54b5b596-16e9-4dbf-980c-62b04bef3a6c/82661201205.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0001a5ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1A5CA 26676 bytes
SHA-256: de128abc2e7fe8be6b9c24facb12e114b91f3e305af3a8fe28947490d6055b65
font_00_sfnt_off000163f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163F3 5184 bytes
SHA-256: c516aa34949754b9d427f19cf5698d75c9c24c861d3022b06bf62d3a77cd7993
font_01_sfnt_off00017589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17589 3772 bytes
SHA-256: b9b49a3c453c53986d7a61d4291ac5a87065d82ff96be43ef0dca6427e6dc540
font_02_sfnt_off0001812d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1812D 10696 bytes
SHA-256: f9a1e23e63f55ec6c1e0f4e6871119b803f7911d73cd12c3fe294bcc39d75f33

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