Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eeec582520b2e1f…

MALICIOUS

PDF

74.7 KB Created: 2021-03-21 11:25:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 30484dfa3878b53150b9c74eb4864d7a SHA-1: 5dc733f7b77fbc5ef9cfed79496a14d7fd523a93 SHA-256: 1eeec582520b2e1fd4d3b89d78fac698cfb0fe5b3ca57dad5cf2bf7f01537fc7
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 0.9989

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 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://jottigo.ru/wix?keyword=essbase+administrator+guide PDF link annotation
    • http://comp-arenda.site/92416505091xipsh.pdfIn PDF document text
    • http://stavki-na-sport.site/nutrient_broth_preparationxi8d7.pdfIn PDF document text
    • http://mapenibo.scienceontheweb.net/actuarial_mathematics_bowers_download.pdfIn PDF document text
    • http://tikanaw.mypressonline.com/51634487608.pdfIn PDF document text
    • http://flymoney.net/25798117722s9noz.pdfIn PDF document text
    • http://tesar-krd.ru/castles_of_mad_king_ludwig_board_game_rulese8sra.pdfIn PDF document text
    • http://salestore.pro/fepegefoxeraversqzvh.pdfIn PDF document text
    • http://javaxirivibewi.mygamesonline.org/harry_potter_sweet_labels_printable_free.pdfIn PDF document text
    • http://xibawolafubiz.getenjoyment.net/architecture_of_8085_microprocessor_with_block_diagram.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365656/normal_602f7246af8bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443341/normal_5ffdd6a864f0e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/limepusotanal/wivumufitusezazuxel.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/liftmaster_garage_door_opener_the_professional_line_1_2_hp.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/android_auto_apk_new_ui.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/advance_directive_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/jewofowubunafunujulex.pdfIn PDF document text
    • https://a16eeaf1-ab09-4fb7-bdbc-3ebfa24c279d.filesusr.com/ugd/03042f_b074f930c1014e0a9a3bc9079e95029f.pdf?index=trueIn PDF document text
    • http://nopawalaxuwaw.onlinewebshop.net/woribamaweraf.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/sukatasafelubimag.pdfIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_ac5e50de72e44ffabebd6e29a9bec8a2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/metakibeme/why_is_my_oat_milk_not_frothing.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/55749669917.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/endless_alleluia_piano.pdfIn PDF document text
    • https://s3.amazonaws.com/ponivotigegepub/segud.pdfIn PDF document text
    • https://6739ca04-605d-4ff4-b4c9-4e5bd75a7819.filesusr.com/ugd/031dda_fe7c38759ccf49da85058c6682413b17.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93F 5092 bytes
SHA-256: 187e3b8ed4f8d9d603d96cf53b4e22da1da94e02e2cbffe11856e0b3daedc05c
font_01_sfnt_off0000ea71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA71 10284 bytes
SHA-256: 1464882c76b3c115cd07673a25384b532731f706c47f8a524619195c7520950c
font_02_sfnt_off00010da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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