Malicious PDF — malware analysis report

Static analysis result for SHA-256 474c0817083b0e71…

MALICIOUS

PDF

114.2 KB Created: 2021-04-04 02:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b607c957e8e11c8ea83e80593887624 SHA-1: 93d61162f7d870e146bc042101f0c8868a98874d SHA-256: 474c0817083b0e71c50da6d2361ed241058349855133bd3ebc566122dad42ee0
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of an advance-fee scam, using lures related to lotteries, prizes, or parcel deliveries. It contains numerous embedded URLs, suggesting an attempt to redirect the user to malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to facilitate phishing or financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/wix?keyword=school+bus+driving+3d+simulator+online+game
    • https://cdn.sqhk.co/gowozepugax/YSWnDjb/daru_band_ringtone_song.pdf
    • https://static.s123-cdn-static.com/uploads/4413712/normal_6003ebdcdda9c.pdf
    • https://bawapumur.weebly.com/uploads/1/3/4/4/134466187/ad1ad86.pdf
    • http://vanimerukaguto.scienceontheweb.net/how_to_measure_language_fluency.pdf
    • https://cdn.sqhk.co/berazanoga/hejifBR/11112030782.pdf
    • https://cdn.sqhk.co/wugunifikezu/pNgchLE/98688685076.pdf
    • https://cdn.sqhk.co/gobajejuz/YKgghgq/winking_owl_wine_sweet_red_alcohol_content.pdf
    • https://cdn-cms.f-static.net/uploads/4425501/normal_605340277240c.pdf
    • http://midarujiwuvi.mygamesonline.org/kowokotifiwe.pdf
    • https://static.s123-cdn-static.com/uploads/4409616/normal_6000ecce01ec8.pdf
    • https://cdn-cms.f-static.net/uploads/4383582/normal_5fdc16aabd81e.pdf
    • https://bapudemajupi.weebly.com/uploads/1/3/1/4/131438294/matatog.pdf
    • http://tometifo.getenjoyment.net/sligh_grandfather_clock_model_0823-1-an.pdf
    • http://gadetebes.sportsontheweb.net/zijatudanowi.pdf
    • https://rotuvose.weebly.com/uploads/1/3/4/8/134849004/tebibigopepe_lesageb_wusuzev_mepuzebuzokipa.pdf
    • https://gidixolatuloxag.weebly.com/uploads/1/3/1/0/131071157/sotepirotidir-tugozunemo-bibomod-teworokese.pdf
    • https://cdn.sqhk.co/kivipemo/Dvidgjl/android_nougat_32_bit.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xejawaji.myartsonline.com/basic_english_usage_free_download.pdf
    • https://s3.amazonaws.com/gopuze/88346921950.pdf
    • https://uploads.strikinglycdn.com/files/94a0b547-4fab-429c-815a-8c9361bfd04d/57211652028.pdf
    • https://uploads.strikinglycdn.com/files/65be66fc-049a-4465-a328-c17a6f18004a/how_far_is_japan_from_australia_by_plane.pdf
    • https://s3.amazonaws.com/navoburarovada/46468053713.pdf
    • https://s3.amazonaws.com/xasovewipeje/5046690724.pdf
    • https://s3.amazonaws.com/zibenoroduzuw/77884460033.pdf
    • https://uploads.strikinglycdn.com/files/3fe2ae4b-fa31-402f-96d9-fc1eea4266b7/lord_of_the_flies_study_guide_chapter_7.pdf
    • https://s3.amazonaws.com/tizowodifi/36339395222.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_off00017c87.bin
4f15b41662e6b24ff0e06a2cce53b765dfadfec3a6ec37b9bf4e99525bae7f73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17C87 5820 bytes
font_01_sfnt_off0001902a.bin
7fa4a649a378647fd1d10672e8acb6e9970b47ee1a766ca7718cd91ac5dafc87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1902A 11972 bytes

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