Malicious PDF — malware analysis report

Static analysis result for SHA-256 46422742f6a5a732…

MALICIOUS

PDF

92.6 KB Created: 2021-04-01 00:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2f8154bbaf3de800f4775d2cd0147669 SHA-1: 80bbb37ddcc602c0641b06e38c68301564e7d22f SHA-256: 46422742f6a5a7320c40b559e16cc77baf42a968babd5021b998b64a55e7db0f
186 Risk Score

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 0.9992

Heuristics 6

  • 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.
  • 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://ponafet.ru/aws?utm_term=living+air+purifier+filters PDF link annotation
    • http://vudifabofugejij.medianewsonline.com/cambridge_latin_course_book_1_vocab_list.pdfIn PDF document text
    • http://legionmone.xyz/ximoseniwlrfn7.pdfIn PDF document text
    • http://zutumufedige.getenjoyment.net/mimokutikuvezirexer.pdfIn PDF document text
    • http://raisinsapp.club/best_quotes_from_alice_in_wonderland_book6e6zi.pdfIn PDF document text
    • https://pubabugolutaj.weebly.com/uploads/1/3/2/6/132680974/861958610216.pdfIn PDF document text
    • http://vijepuwobewi.mygamesonline.org/bacon_and_butter_ketogenic_cookbook.pdfIn PDF document text
    • http://pixxel.life/para_que_sirve_el_zinc_en_los_nios_con_diarrean83ta.pdfIn PDF document text
    • http://lifeshop.pro/char_grill_infrared_grillsjpsmo.pdfIn PDF document text
    • https://josuriwomevopi.weebly.com/uploads/1/3/4/7/134769094/3037601.pdfIn PDF document text
    • https://polatoni.weebly.com/uploads/1/3/1/3/131379392/kesofedonag_taxudisuripeku_sunikazo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://042e50b4-45d0-4577-915a-c14d43ab21ad.filesusr.com/ugd/18f527_e639b02191cd479fa0ee7cbfe58777d3.pdf?index=trueIn PDF document text
    • http://rotufixijisadi.onlinewebshop.net/selections_from_the_complete_works_of_swami_vivekananda.pdfIn PDF document text
    • https://43fe4710-460a-4ad3-90dc-2dd795c51528.filesusr.com/ugd/a32c20_f85ad770f42b4bb4b3e871f83b907d46.pdf?index=trueIn PDF document text
    • https://1c92f6d8-19eb-429c-9239-1cf6be91372f.filesusr.com/ugd/cc1a03_9c544ef2f6b24ba38c125db2d616c8e9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e69cb4d-b9f3-47b0-8e54-ea3e1b06c95f/murofibebarunu.pdfIn PDF document text
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_0fcddc43977a49baae96415f341c1c39.pdf?index=trueIn PDF document text
    • https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_bfaf92ac64314fd2b2f97268136d04c6.pdf?index=trueIn PDF document text
    • https://3bdad275-8828-414d-9063-9532e035d791.filesusr.com/ugd/c67d0c_07adf004bef14ece92d8c09626aa0787.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/db19174f-915f-4d19-bce1-4941c5013ea9/william_sonoma_bread_machine_white_bread_recipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40bc0d60-f072-427e-b4c2-8db4ef67de21/gofinitukuloniwukubonu.pdfIn PDF document text
    • http://wuragumok.atwebpages.com/xudokodudiniboferitukivid.pdfIn PDF document text
    • https://f5071db7-799c-4807-8cfa-c66b012f33b1.filesusr.com/ugd/9a4546_c4768e83a96545de8fcc24f0477b3337.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f1b0399-18f6-49c5-b162-248575354f8a/38980736429.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_off00012cc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CC8 5072 bytes
SHA-256: 1d65aa8a8902917a5ab476553ad04e4c4109dc565463f9e4f37957d97d9e0ce4
font_01_sfnt_off00013e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E2B 11392 bytes
SHA-256: fa7f18f7e835e8c5aa09a171365bef33f1eb18b6131c187a6917752107cde81a