Malicious PDF — malware analysis report

Static analysis result for SHA-256 5774803153a39a82…

MALICIOUS

PDF

69.8 KB Created: 2021-03-14 11:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f330a1baa7ecb8844564d1e63ab003ea SHA-1: 927f087bdf018eea7878dde41cee25500a8d2f90 SHA-256: 5774803153a39a82b03262ddea045642b50305e4f13ff9d49bf89f3b9c1553fc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://fokemale.ru/wix?keyword=milescraft+saw+guide+dewalt PDF link annotation
    • http://kidepokapila.22web.org/yaris_verso_repair_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/madufuxenuw/0hghiDI/jomagudelizawekukakavot.pdfIn PDF document text
    • https://cdn.sqhk.co/sururezog/G8gdhgD/how_to_change_eye_color_gta_5_online.pdfIn PDF document text
    • http://zumofujewor.iblogger.org/mebexawasuwegu.pdfIn PDF document text
    • http://manenumo.iblogger.org/nopezigemaxusunapelug.pdfIn PDF document text
    • http://nuzidixiwetor.22web.org/jenn_air_36_pro_style_gas_range_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/i6hcijq/xelirasilusopidazabidawu.pdfIn PDF document text
    • http://fidevojimijudoj.iblogger.org/how_to_save_inkscape_as_svg.pdfIn PDF document text
    • https://cdn.sqhk.co/dosojegomugu/iaghEii/65597610935.pdfIn PDF document text
    • https://cdn.sqhk.co/wemitupu/bLmhg8M/13937891980.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/WnAhhgd/wuzonevukal.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/dlGBBGI/small_pencil_box_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/vatukaso/ehrRZhh/child_growth_chart_boy_calculator.pdfIn PDF document text
    • https://cdn.sqhk.co/joraxeneli/iiXPpwc/archery_battle_3d_hack.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vomusisoz.epizy.com/daxegurexokibekuvivezopol.pdfIn PDF document text
    • http://bovamiwojilonem.epizy.com/baadshaho_audio_naa_songs.pdfIn PDF document text
    • http://minirulo.epizy.com/subenudo.pdfIn PDF document text
    • http://notijopozij.epizy.com/snuggle_dryer_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b196d922-129b-47f7-bce3-e0e052e8fbd1/asrock_z170_pro4s_ram_compatibility.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f656395e-e074-476b-a8e3-84b6c418dee1/mamiya_c330_flickr.pdfIn PDF document text
    • http://nolepukopele.epizy.com/silulowiwis.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_off0000d298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD298 5284 bytes
SHA-256: f953eb995485a5e82bdf5f8ead0b1f56980b4bf516b0c521ed9301ef6509903e
font_01_sfnt_off0000e4be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BE 10668 bytes
SHA-256: dda1ad74b8a1e66a4d389ce4c4709e665b83873f803bed028e6c7612608dc2ee

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