Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e4ad5470d7997d8…

MALICIOUS

PDF

71.2 KB Created: 2021-03-30 23:23:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 509ed02742a7e508df012f4d1119258f SHA-1: b68bfe1fd43417a27e70b1e7b592b42d7cc7f94e SHA-256: 2e4ad5470d7997d8d6ad54b207456b021cf515be97856beb8ef53940d6bb14b3
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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-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://dugedepap.ru/award?keyword=algorithmic+trading+dma+barry+johnson+pdf PDF link annotation
    • https://cdn.sqhk.co/kutajanode/OKjf1Cn/64825913378.pdfIn PDF document text
    • https://cdn.sqhk.co/pomisiforuko/Ajfjejh/phoenix_movie_showtimes_pune.pdfIn PDF document text
    • https://cdn.sqhk.co/dudurejavir/pfHevOJ/49176894425.pdfIn PDF document text
    • http://zitugaxusi.mygamesonline.org/sobivejugowejed.pdfIn PDF document text
    • http://zukesijinizik.mywebcommunity.org/resumen_de_la_novela_cronica_de_una_muerte_anunciada_por_capitulos.pdfIn PDF document text
    • https://cdn.sqhk.co/xupebasolaw/jdjdmig/filmora_effect_pack.pdfIn PDF document text
    • https://cdn.sqhk.co/rejinujo/szdaGji/how_to_use_analog_oscilloscope.pdfIn PDF document text
    • https://cdn.sqhk.co/molipigi/dhdgjWk/enemy_gates_stealth_war_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gipudeviwapi/bO0Wchb/transformers_movie_autobots_characters.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/idGigha/farmville_2_country_escape_new_animal_park.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/sisaxu/blunders_crossword_answer.pdfIn PDF document text
    • https://cb8582fb-ab29-4f13-bfd4-623ca244ab52.filesusr.com/ugd/d61b30_7ca6e7f51cc24ac9b4fb3ebbd1c88817.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fuwuzerijofa/renupofesinujubuval.pdfIn PDF document text
    • https://2cc3dcad-61c1-4442-8662-ca5be7cd8672.filesusr.com/ugd/71b93f_6970f19f63f74b789f92da7cbf54e859.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/95a592ed-5c8b-460d-8d07-ae75e52fe861/what_does_dect_6.0_mean_on_a_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51872378-46b2-4aa1-928b-5574e7527d67/what_does_it_mean_when_a_smoke_alarm_flashes_red.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/algee_smith_decide.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/what_kind_of_light_bulb_for_oven.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41f7eb00-fa2b-4a24-bc6d-8352c301a751/twilight_eclipse_full_movie_download_in_hindi_hd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/599e1662-d300-4f98-b3f3-a0fc89149dc6/story_of_the_eye_2004_watch_online.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_off0000d703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD703 5876 bytes
SHA-256: 27d0c5dc148e2284d0fe0292611a0bce238ce219656dcc7715c260274547794a
font_01_sfnt_off0000eae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE5 10148 bytes
SHA-256: 5c84470e43b203112486536c0c60bdaf10a5c3dfe434a3700ad103e38cc08709

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