Malicious PDF — malware analysis report

Static analysis result for SHA-256 81d084f1c6148a8d…

MALICIOUS

PDF

87.6 KB Created: 2021-05-25 09:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0637a10349520601321ea9a627cb8f2c SHA-1: 9c3e8f9ec374d963886281459184650540650e85 SHA-256: 81d084f1c6148a8dcd1ba307c0a5e5b0b811b261dfab81f55e10b55fc09c9750
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=which+sentence+tells+the+main+idea+of+i+hear+america+singing PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385012/normal_6037fe38802d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377101/normal_5fc88aab3477e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404740/normal_606d42e35e23e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407793/normal_5fe80bf260881.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417519/normal_5fd6445632b51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497081/normal_60699842b8d0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_6042ce1b84599.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/83b62e49-4f5c-4b34-ac82-d354197ce5f2/1st_hundred_fry_words.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/692ab12f-e916-45e4-aa01-bb2aa81842ab/game_of_life_online_free_unblocked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ca2c80f-f241-4c7f-b678-eef28a9ee1e2/months_of_the_year_activities_ks2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e67babe-7b18-4d20-809c-fbe28af879a6/divulavigekozokud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c698df05-dceb-4bfb-a54f-9232c87551f9/51695035812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c5e25a5-cdd3-4cc4-ad16-2801b565688d/the_end_of_evangelion_ending_explained_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd7444d0-9aa7-4061-b14f-bc2b6ee5ed42/kadul.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/bhai_balwinder_singh_ji_rangila_shabad.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/minecraft_map_parkour.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/gufufasesola.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/12493912096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddf163f7-c0b9-4738-88bd-8324d4a5c57d/el_dador_de_sueos_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/45794275529.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/35802536107.pdfIn PDF document text
    • http://www.readwritethink.org/classroom-resources/lesson-plans/walt-whitman-model-poet-989.htmlIn 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_off00011855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11855 5448 bytes
SHA-256: 7e37b137a672f7cdfd92fefebd32b4b0b3d767f76cd387abb9091b39a300259f
font_01_sfnt_off00012ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AC0 10856 bytes
SHA-256: 20c901f1f20deade27db4b71e785aed9231135da936c3e53a4016c69478812d5

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