Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7eeba64ce4a6662…

MALICIOUS

PDF

73.7 KB Created: 2021-02-02 10:01:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 206b8d7ca2937143f7a0b10a905157b0 SHA-1: 95a054bbe1cec8e2b6616c0a0e6a2b2371b3d6ea SHA-256: a7eeba64ce4a66624de1a964b1c8703975e1870582a95dfe45f3f1d204628f08
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. Many of these links point to PDFs hosted on various domains, suggesting a coordinated effort to manipulate search engine results or distribute content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/123?utm_term=world+history+unit+2+study+guide PDF link annotation
    • https://cdn.sqhk.co/sadirorig/ehgifJQ/7_words_deftones_traduzione.pdfIn PDF document text
    • https://cdn.sqhk.co/risubibasero/iiCgjic/nawarimuzanilagupulo.pdfIn PDF document text
    • https://vepemetamat.weebly.com/uploads/1/3/4/3/134354227/19ff2a15.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/e8shjna/roberesevikamuloxadez.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/g7jhgcW/ratotazojezupa.pdfIn PDF document text
    • https://cdn.sqhk.co/lobinazema/yePggif/evil_within_movie_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/movozuba/AXgfib5/mafufabilenegori.pdfIn PDF document text
    • https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/45743d9aaa0d.pdfIn PDF document text
    • https://rofovotojoroko.weebly.com/uploads/1/3/4/8/134878837/bagakowirulu_nuvazerug_zarutejad_mifelawoxemagep.pdfIn PDF document text
    • https://cdn.sqhk.co/latosagax/jihc4jh/crude_oil_price_chart_live_now.pdfIn PDF document text
    • https://cdn.sqhk.co/fijajiles/gfkYggx/how_to_block_out_traffic_noise_in_bedroom.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/jSiehbu/mx_player_apk_latest_version_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/bagudivibi/AgfIlEU/80451282388.pdfIn PDF document text
    • https://fegemuvu.weebly.com/uploads/1/3/2/6/132695633/2256e037f6e0.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/divelikubapiwaj/21810427174.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/devanaxo.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/fugebe.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_off0000e395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE395 5124 bytes
SHA-256: f3804914f1019f57785098c7ebc2d9cf0d033bd8a25467694d50bb381daf1276
font_01_sfnt_off0000f512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF512 10732 bytes
SHA-256: 7ca1a3efe8700763b3f7c535f6e70d191bc681817d94740689b8271ec56d105d

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