Malicious PDF — malware analysis report

Static analysis result for SHA-256 101969ac27a6afce…

MALICIOUS

PDF

105.8 KB Created: 2021-03-14 09:58:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8c57e224350fb26fb2ceacf4a231870b SHA-1: 5569b2c70630a822294f52497e9df852c3d93f56 SHA-256: 101969ac27a6afce0efed0de87b3693ade740d7eaf804ecb11f53ad74a6236fa
126 Risk Score

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 0.9986

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 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/strik?utm_term=the+african+origin+of+civilization+free+pdf PDF link annotation
    • http://svoydvalend.xyz/sony_android_tv_vs_smart_tvxafk6.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/IgggijN/dezegukubaxukixafipul.pdfIn PDF document text
    • http://wisatemubudu.medianewsonline.com/97881208389.pdfIn PDF document text
    • http://femetorisufi.sportsontheweb.net/al_arabiyyah_bayna_yadayk_vocabulary.pdfIn PDF document text
    • https://cdn.sqhk.co/pukikojat/hv1Fqjc/mega_jackpot_free_tips_channels.pdfIn PDF document text
    • https://cdn.sqhk.co/zijopenuxafi/gitiar9/the_walking_dead_season_one_walkthrough.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/gnX3vNV/weredakikorojafarotibur.pdfIn PDF document text
    • https://cdn.sqhk.co/dalegoti/f1rZhiL/game_of_thrones_characters_robb_stark_wife.pdfIn PDF document text
    • http://koolmaxt.online/manufacturing_account_formatnycnd.pdfIn PDF document text
    • http://andyhongdigital.com/jurassic_park_3_in_hindi_download_filmywapi17xi.pdfIn PDF document text
    • http://prognoz-football.club/mathematics_translations_of_linear_functions_worksheet_answersy1ip0.pdfIn PDF document text
    • http://tibagisuminove.sportsontheweb.net/how_to_build_your_own_vegetable_garden.pdfIn PDF document text
    • http://kungfumalibu.com/fajumuwawasojakunobi2phpu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/86ec3f32-cbd8-44d9-a6f3-5bc10ca8c442/how_much_oil_does_a_toro_6.75_lawn_mower_take.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c74ae6e9-f1b2-43f2-b665-6c55531ad694/81429348831.pdfIn PDF document text
    • http://movasedumanepe.onlinewebshop.net/imax_b6_charger_cable.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/28955088488.pdfIn PDF document text
    • http://nalujisutu.epizy.com/high_protein_low_carb_food_at_taco_bell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09f8066b-d349-4cad-828c-fa4f7caea9f9/a68hm-e33_v2_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/441119c7-2adc-4a75-9d99-945b445cab8c/hp_4500_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc8e5036-a5f0-407e-b75b-7e73ff7138b0/five_nights_at_freddys_2_unblocked_games_77.pdfIn PDF document text
    • http://maviwapas.epizy.com/vidmate_new_version_2019_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/ravomege.pdfIn PDF document text
    • http://fasokefukolu.epizy.com/18682094147.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000146c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146C6 5296 bytes
SHA-256: 802696da1259aecebb00b312426f25dafc8b2a5fa2f955d5aca6383c5014ab4d
font_01_sfnt_off000158d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158D7 12324 bytes
SHA-256: 14d34dbc31b91cc03df8dd842891fd1a622f9de105a9237ce65ff7d3962eaedb
font_02_sfnt_off0001826d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1826D 16452 bytes
SHA-256: e996d7728a4c3280414fb0b087adbec8e883e1f2e454e604528eb600bf1cf7d8