Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5e172f84b8ae6a7…

MALICIOUS

PDF

82.9 KB Created: 2021-03-03 19:06:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 2f99030f1a9850b8cb3aef43614aa3f0 SHA-1: 7fa15076e5309942e3b3895dd4bc2356a63ce7f7 SHA-256: d5e172f84b8ae6a719aa13c5998c98c82ed2229ed23ffa7ed7953319faad3111
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, suggesting a link farm designed to distribute further malicious content or phish users. The document body, though heavily obfuscated, contains references that might be used as lures.

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://baarspo.ru/award?keyword=ashton+kutcher+movies+on+netflix PDF link annotation
    • https://jitipukojid.weebly.com/uploads/1/3/4/7/134707402/luditigafopuxoliv.pdfIn PDF document text
    • http://bumuxonej.22web.org/why_are_my_krk_speakers_crackling.pdfIn PDF document text
    • http://wowogobofomufu.mygamesonline.org/skilsaw_3310_price.pdfIn PDF document text
    • https://nobarolibefo.weebly.com/uploads/1/3/1/4/131407117/d73659965c45.pdfIn PDF document text
    • https://bigorofepomibed.weebly.com/uploads/1/3/4/4/134400252/a432aa9fd76c206.pdfIn PDF document text
    • https://diwezexu.weebly.com/uploads/1/3/4/3/134310051/7c1369ff3b3bca.pdfIn PDF document text
    • http://nanonewe.scienceontheweb.net/gufola.pdfIn PDF document text
    • https://xularidamilizal.weebly.com/uploads/1/3/4/6/134685918/164217.pdfIn PDF document text
    • http://bestgirl69.com/tabla_de_integracion_de_funciones_trigonometricase2fjx.pdfIn PDF document text
    • http://xagimovuroj.22web.org/anniyan_tamil_movie_songs_free_tamilwire.pdfIn PDF document text
    • http://sewasapeko.22web.org/adventure_games_apk_list.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/leteraxewe/34616615773.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/29174698679.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/zogimojikupo.pdfIn PDF document text
    • http://dowomux.rf.gd/solidworks_mac_student.pdfIn PDF document text
    • http://bifovigavij.myartsonline.com/cuisinart_ss-700_parts_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/kaputatad.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/36816184915.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/bowmasters_all_upgraded_characters_apk.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_off00010843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10843 5092 bytes
SHA-256: d5c7c427e5951c9518bc52d6411bd18cd11914d70451714343d77a2e26c213c6
font_01_sfnt_off0001197f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197F 10664 bytes
SHA-256: cd2ec965fa8facf11c61a0d1ed6d029de8eece0cee9c8ef5a070406a88f58c91

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