Malicious PDF — malware analysis report

Static analysis result for SHA-256 077cfe7536cdb93e…

MALICIOUS

PDF

49.9 KB Created: 2020-10-25 06:40:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 924b0963aaf078af04169252606cd06c SHA-1: 1de09d604aceecf9db7ff6bd387f7a213630ee1e SHA-256: 077cfe7536cdb93e3e142ad19931c9672138a59afcad79f79b6513f5a50c1a16
184 Risk Score

Malware Insights

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

This PDF document is designed as a link farm, masquerading as a hiking guide to entice users. It contains a large number of embedded URLs, with at least one identified as a malicious redirector. The document's primary function appears to be directing users to potentially harmful external sites, likely for SEO spam or phishing purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.com/123?keyword=bear+mountain+hiking+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5f8703b80d7b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f883e939a3cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_5f93f3e9c1ac8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371509/normal_5f89c56f01040.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/71e9878.pdfIn PDF document text
    • https://nibobesexetew.weebly.com/uploads/1/3/4/2/134266191/2804930.pdfIn PDF document text
    • https://tedumuwoke.weebly.com/uploads/1/3/1/3/131397970/295a4b086e.pdfIn PDF document text
    • https://betoxugibujimiv.weebly.com/uploads/1/3/1/0/131071043/kasogumezo.pdfIn PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/76e789.pdfIn PDF document text
    • https://zevodajiwagadiz.weebly.com/uploads/1/3/4/3/134340874/zejokanakezewitowogo.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/sulag_beramezobam_jevukisu_zajifetapog.pdfIn PDF document text
    • https://wanezetisozol.weebly.com/uploads/1/3/4/4/134468493/xuvelawifiz_zojasusurigam_xikodagelu.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/xodulunezuvuwedun.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/2c0cf8c8-108d-414b-907c-2089a76e4603/guia_de_pares_biomagneticos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b45c339-f931-48c1-8bf8-a826df3825df/polimeros_y_materiales_compuestos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9463a980-1aa9-4dea-be84-315a7f657d4c/75949319926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7548/5339/files/telecharger_dictionnaire_anglais_francais_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1406/0702/files/forami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/4618/9473/files/19622984791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5262/4803/files/11917246794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4887/6697/files/temple_run_apk_mod_unlimited_money.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/ambulance_driver_handbook_california.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/kikibot.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCD 5140 bytes
SHA-256: ad5b8f8181c9b10bb42468ca37129c331828de73361d84233671505e17fcb221
font_01_sfnt_off00007f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1D 10260 bytes
SHA-256: 52887b966c36c9f4de38b3504da652f5fb1d5bde3f1cb913d8d93cfc640f3fce
font_02_sfnt_off0000a26e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA26E 16632 bytes
SHA-256: a0f721931e8d46909a5774dfc5fef3f121ae0007caac5936856919a4d872074d