Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d78a869f8224a57…

MALICIOUS

PDF

77.9 KB Created: 2021-03-20 10:26:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 986a05339f6b0119c692a77f018979c2 SHA-1: b64888f2792adb022260a87d184a181338811167 SHA-256: 7d78a869f8224a5731128b238c1a6df420bad3220b4f973e36f9af691042d644
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting a link farm or phishing attempt, with one URL pointing to a potential second-stage payload. The document body, though heavily obfuscated, appears to be a lure related to a 'Sig Sauer p938 review'. No scripts were extracted, but the presence of numerous external links and the overall detection profile strongly suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=sig+sauer+p938+review
    • https://cdn.sqhk.co/fikalibumi/ifIajiJ/behka_na_parey_hut_love.pdf
    • https://fujelaxu.weebly.com/uploads/1/3/4/7/134704358/8748514.pdf
    • https://cdn.sqhk.co/vewukiziwemi/h8ib3ib/77874744060.pdf
    • https://cdn.sqhk.co/mefivujosawo/CH6ihjh/my_golf_3d_game.pdf
    • https://cdn.sqhk.co/muribirigim/egjhjie/57260892647.pdf
    • https://nugivukowunel.weebly.com/uploads/1/3/4/0/134041243/potewadosivadapid.pdf
    • https://cdn.sqhk.co/lokabawopup/r5heJgc/ice_cream_flavors_ben_and_jerry.pdf
    • https://cdn-cms.f-static.net/uploads/4408995/normal_6046c50d9a2e5.pdf
    • https://cdn-cms.f-static.net/uploads/4487184/normal_60532c3d4e7f4.pdf
    • https://cdn-cms.f-static.net/uploads/4422390/normal_600fc9721901e.pdf
    • https://cdn.sqhk.co/jopubelo/jcPhcnb/mejedekimibonoduditar.pdf
    • https://cdn.sqhk.co/kavejufa/z7jf8W2/tunnel_rush_unblocked_66.pdf
    • https://cdn.sqhk.co/bevizewo/bhqvInL/43929482824.pdf
    • https://cdn.sqhk.co/toxotagida/V82igKL/voxuporijifinu.pdf
    • https://cdn.sqhk.co/xurawupo/hjFhdij/redacted_report_mystery_object_harry_potter.pdf
    • https://cdn-cms.f-static.net/uploads/4375690/normal_604949f455c5c.pdf
    • https://cdn-cms.f-static.net/uploads/4499660/normal_6032efca6fcbc.pdf
    • https://domaruvujus.weebly.com/uploads/1/3/2/6/132683142/e38ff.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/suxugipipolazog/end_of_evangelion_poster_meme.pdf
    • https://s3.amazonaws.com/kexamoxusinixu/candlestick_patterns_images.pdf
    • https://s3.amazonaws.com/xeponodij/wisodovuf.pdf
    • https://s3.amazonaws.com/savukojubusum/anganwadi_vacancy_form_in_delhi.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_off0000f13e.bin
0ea29bb352de5211c816aa466b696c7931aa6348197e6357a6ced5f989f76be6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF13E 5724 bytes
font_01_sfnt_off000104d4.bin
e4cc3f5244eb2eeec738eeed2fc775e327fce2697c14a21753a828b7b86465a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104D4 11024 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.