Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4ac0abdc3f814a…

MALICIOUS

PDF

69.3 KB Created: 2021-03-16 19:28:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 8eb0562b0398489bb178a7cb99c6f8db SHA-1: c991d4eff0e5792d0025cad418c82db5e35c5233 SHA-256: 1f4ac0abdc3f814aa17cf2323047f70846c2ada38d87986dadda9edad70dec3b
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm, suggesting a malicious intent to redirect users to potentially harmful sites. ClamAV and ML classifiers identified this PDF as malicious, specifically flagging it as a phishing trojan. The document body, though heavily obfuscated, contains keywords related to diet and weight loss, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://mezovuduw.ru/award?keyword=egg+diet+for+weight+loss+pdf PDF link annotation
    • http://wiinorama.fun/adobe_photoshop_7.0_tutorials_free_download_in_hindiwzk2h.pdfIn PDF document text
    • http://xagelofitu.22web.org/rusujezozuxe.pdfIn PDF document text
    • http://sodahq.club/fimonawubunigoninapobuk673ey.pdfIn PDF document text
    • https://watuxiso.weebly.com/uploads/1/3/2/7/132740831/wavolidosa.pdfIn PDF document text
    • https://pijusutuwo.weebly.com/uploads/1/3/1/4/131407307/bikusane_maxobosogular.pdfIn PDF document text
    • https://cdn.sqhk.co/jerivudofin/ghOgjhj/panebusowoferepifaponiku.pdfIn PDF document text
    • https://cdn.sqhk.co/tatudawo/wcigjiS/woodturning_magazine_index.pdfIn PDF document text
    • https://rejobasagiletez.weebly.com/uploads/1/3/4/6/134642313/falepixijedofe.pdfIn PDF document text
    • http://puwexakibo.iblogger.org/the_art_of_destiny_volume_2.pdfIn PDF document text
    • https://rofoxanubojinud.weebly.com/uploads/1/3/2/7/132740779/duzefatemo_modufavaxekitut.pdfIn PDF document text
    • https://tibaxefuxi.weebly.com/uploads/1/3/4/0/134017075/mujakipewugik.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/zasubovelujitofobejol.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/best_websites_to_movies_on_pc.pdfIn PDF document text
    • http://xekipeme.rf.gd/emergency_denis_johnson_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/adventurers_league_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/iphone_icloud_unlocker_v1_0.pdfIn PDF document text
    • http://zasugizej.epizy.com/what_is_the_definition_of_a_persuasive_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/betty_crocker_cookbook_1950.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13B 5140 bytes
SHA-256: 202cc3f0804e94d26895afdd4bd3cf912973d310b031d2fd362cc7dffd09ea36
font_01_sfnt_off0000e2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D4 10512 bytes
SHA-256: f3df2c089d1790dfb5857f614bafc6c1c6f71f43946ebe57614cfb193e4923ed

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