Malicious PDF — malware analysis report

Static analysis result for SHA-256 030a809ac9b3f6e0…

MALICIOUS

PDF

77.6 KB Created: 2021-05-20 02:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 093dfbdd8cd674b349a9d0ab2f84de6c SHA-1: 268967983eae4574891be47d208fac9ee29c19ee SHA-256: 030a809ac9b3f6e08deb1baebba4d2d342beb3ce4568d1f8eea0f2e6591b9006
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are to benign-looking documents, but one primary URL points to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via the linked content. No scripts were extracted, but the PDF structure itself is indicative of a link farm designed to direct users to malicious sites.

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://lozipotod.ru/strik?utm_term=imagenes+de+san+valentin+chistosas+para+facebook PDF link annotation
    • https://xegubivagemegi.weebly.com/uploads/1/3/4/4/134481439/bomabamom.pdfIn PDF document text
    • https://xiwupezarevapo.weebly.com/uploads/1/3/2/6/132681984/5be238.pdfIn PDF document text
    • https://zopoxetofosifa.weebly.com/uploads/1/3/4/8/134863155/wesujeremixugejutaza.pdfIn PDF document text
    • https://dewajijivixire.weebly.com/uploads/1/3/4/6/134638152/kemorokokuxaxa.pdfIn PDF document text
    • https://rezalebivug.weebly.com/uploads/1/3/0/9/130969918/sosimazowanijolifogu.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/e65cdbf6-2ad5-43ee-b9c3-57a66ab74865/5_proofs_of_the_existence_of_god_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7f8415d-aa10-45a5-a9be-bd6eec360e7e/wings_of_fire_boxset_books_1-5.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/general_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa8b7713-dc17-4e89-a794-707083928cf7/bamumudepitomorud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8c7a149-162c-4ace-a1bc-9a6cf3101d87/what_ink_does_hp_deskjet_2545_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/000e7300-91dc-44e4-a02c-0907fb52b1ce/31105514990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed9c78d-0c61-4716-a2ac-67d75547295a/how_much_air_for_plasma_cutter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16eb72b2-846f-496f-9e1d-9b23c1c071a3/60157555422.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c664d055-6ba9-48f7-b2db-2b0bc657d523/12043429232.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/898b25ce-04f5-4b43-b611-2b0f2d5d3c70/eureka_nen110a_whirlwind_bagless_canister_vacuum_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/tp-link_av500_nano_powerline_adapter_starter_kit_tl-pa4010kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5c2b8b6-e617-4215-9b3a-c3c59a23d10a/wawaronogalinuvuwudozog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b0e64fa-f527-4eb5-8612-925e349f584d/martin_luther_king_jr_i_have_a_dream_speech_literary_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efde8a25-adc9-4fe3-ad62-0d2f2350d051/yield_strength_of_mild_steel_in_n_m2.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/national_game_hockey_information_in_marathi.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_off0000ed6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6B 5772 bytes
SHA-256: a887b7cb73268c8187399670b6238261c2b18f9994c768ac336a3551444d630d
font_01_sfnt_off000100e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E4 11744 bytes
SHA-256: b5170b023586ede3962f482fe3c329e0e35af628deffeadde822213620338fa6

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