Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c69ee6b710039a…

MALICIOUS

PDF

76.9 KB Created: 2021-03-07 10:03:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a971d10c4fb00e87cf2cc2335f401e05 SHA-1: c27c82cbb525173f92a39706935a58738cd551c4 SHA-256: 62c69ee6b710039aa1a0695cd9b206ea64ff98844697f9fc6bfdabf4f2db8b3d
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 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://gimoguvi.ru/aws?utm_term=denon+avr-x3200w+firmware+update PDF link annotation
    • http://tejidirexe.mywebcommunity.org/zivokakinuzamivagum.pdfIn PDF document text
    • https://tuzisufuga.weebly.com/uploads/1/3/4/4/134458332/ginujoregedebopekiw.pdfIn PDF document text
    • http://rawenspant.online/approaches_and_methods_in_language_teaching_ppt31umw.pdfIn PDF document text
    • http://roman-holidays.shop/66165519724ybcua.pdfIn PDF document text
    • http://tonerinkstore.com/wotlk_gearing_guidegpboe.pdfIn PDF document text
    • https://bumogekatagod.weebly.com/uploads/1/3/0/7/130776321/b1f937f5a.pdfIn PDF document text
    • https://vokijovagugudis.weebly.com/uploads/1/3/0/7/130776016/wajezo.pdfIn PDF document text
    • http://keniworu.mywebcommunity.org/bruce_lee_movie_enter_the_dragon_1973.pdfIn PDF document text
    • https://bifixebuwo.weebly.com/uploads/1/3/0/7/130776276/jotugeni.pdfIn PDF document text
    • http://originalhallyu.com/tp_drosophile_ts_corrigC3A9imppr.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/cocricot_texture_packmqgfu.pdfIn PDF document text
    • http://vurovolapoza.mygamesonline.org/kilalojixudozilipawarogi.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/muvevanepen/feneromeposafatuzidir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d8614e9-0545-4b17-8cd9-689ffc84d03f/mitsubishi_tv_model_wd-65638_owners_manual.pdfIn PDF document text
    • https://466f9527-ada3-48b4-ac0c-4ba5546996ca.filesusr.com/ugd/a4b6b9_09beeef8529341288980266bb9b3bd49.pdf?index=trueIn PDF document text
    • http://novogizeboje.myartsonline.com/what_does_esoteric_knowledge_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/283e9e36-3315-4c88-83e7-55599011cf8b/fovatamurutufu.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/60294140448.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/zakabejiziwiku.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/old_scroll_ppt_template.pdfIn PDF document text
    • https://af0fe010-594a-4ec7-a26b-e2d78e33490d.filesusr.com/ugd/7d2910_875c9fc6dffe48e1a8d8fc58858cdb05.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/samodubek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c788985f-a407-4015-b578-e765cf31a09d/16901704041.pdfIn PDF document text
    • https://a6f18165-9bfd-46c9-8f51-0ab50cd0b687.filesusr.com/ugd/265c7a_dd1b3817a3d549e68f04ce393369ce22.pdf?index=trueIn PDF document text
    • https://37523d11-79cf-4eb3-ada4-f05de57c71ee.filesusr.com/ugd/275374_5091b7d67721424dbf6f905946180e81.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/94df0758-883a-47db-8f0b-78442e459dfa/jubedizijeb.pdfIn PDF document text
    • http://mepitar.atwebpages.com/how_to_install_google_play_on_amazon_fire_tablet_5th_generation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a7accec-e70f-4a99-9348-1f1b51b718b2/how_do_you_read_a_trane_serial_number.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_off0000eef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF3 5664 bytes
SHA-256: afee5c687102bea621e650c224e283bd50f9f957ec13efd26e9a47a375f8fdfe
font_01_sfnt_off0001024d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024D 10392 bytes
SHA-256: c4f249940913e50c76e3cf39e727f36cab0810a2d7e89347975829d5e828d56f