Malicious PDF — malware analysis report

Static analysis result for SHA-256 0477d387d982980a…

MALICIOUS

PDF

80.6 KB Created: 2021-02-28 13:30:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f2b34287bbedc6a2c9b027ac2222b81c SHA-1: d5fa75629716566694dc592c52fda6c82814563c SHA-256: 0477d387d982980afbb349ef84a96021f70dde8de5ac4281a9fccaa7cd86862a
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. Several of these links point to unknown domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of this file, likely serving as a lure to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/123?utm_term=craftsman+42cc+chainsaw+idle+adjustment PDF link annotation
    • http://hotita.fun/scary_teacher_3d_chapter_2_download569wt.pdfIn PDF document text
    • http://hydraruzxpnew4af.exchange/what_is_the_size_of_an_integer_on_a_32-bit_system4i2el.pdfIn PDF document text
    • https://gisijenoxumo.weebly.com/uploads/1/3/1/4/131437849/8876246.pdfIn PDF document text
    • http://wwnews.site/pexizezatipojewalepopidego9a.pdfIn PDF document text
    • https://wirimodarezekas.weebly.com/uploads/1/3/5/3/135314182/813257.pdfIn PDF document text
    • https://revijokatise.weebly.com/uploads/1/3/3/9/133999222/786a2cf3f.pdfIn PDF document text
    • https://leniwexobopusez.weebly.com/uploads/1/3/4/7/134713406/1508804.pdfIn PDF document text
    • http://mandarin-fruit.space/didinakxffy.pdfIn PDF document text
    • https://luvodufugatese.weebly.com/uploads/1/3/4/8/134893210/8002864.pdfIn PDF document text
    • http://bikefevogob.iblogger.org/rey_rivera_body_crime_scene_photos.pdfIn PDF document text
    • https://moxidoneke.weebly.com/uploads/1/3/5/9/135993461/f8c7bfc7ad.pdfIn PDF document text
    • https://vulodimov.weebly.com/uploads/1/3/4/8/134880101/3e36297bd086e.pdfIn PDF document text
    • https://vomimefime.weebly.com/uploads/1/3/5/3/135316042/14b95df.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/gozilum/tabla_de_conversion_de_medidas_pulgadas_a_centimetros.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/how_to_turn_on_big_boss_air_fryer.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/88727767135.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/ralavuwodawimutis.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/bench_press_form_wrists.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/4100634064.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/zedepitaju.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/arcade_fire_everything_now_piano_sheet_music.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_off0000fdf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF3 5556 bytes
SHA-256: 2c75e21d28421cc2c139aff7b7cc99e54760b51478fdf40749d08ed27231478d
font_01_sfnt_off000110c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C7 10520 bytes
SHA-256: 52ef8ac996d666ff5855ad36f90905c8dba51d96a700986526d8ed333bd7128e

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