Malicious PDF — malware analysis report

Static analysis result for SHA-256 e47cb902d1430d27…

MALICIOUS

PDF

56.7 KB Created: 2020-10-15 13:07:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: dd845c733d49a00a95a398139a0af271 SHA-1: 62169a09d57eadde3c4a456ba7bef2ee523b5aad SHA-256: e47cb902d1430d27e5988ef8c7b382c8d4fd3e938a51938738d2f98bc60cb791
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector, suggesting it's part of a link farm or SEO manipulation scheme. The document body, though heavily obfuscated, contains the malicious URL and references to manuals, reinforcing the lure. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs points to an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/123?keyword=ruger+sr22+owners+manual In PDF document text
    • https://site-1048559.mozfiles.com/files/1048559/29606120724.pdfIn PDF document text
    • https://site-1042587.mozfiles.com/files/1042587/95666939160.pdfIn PDF document text
    • https://site-1036815.mozfiles.com/files/1036815/13472567116.pdfIn PDF document text
    • https://site-1039797.mozfiles.com/files/1039797/jigom.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/20ba1d1ecc5a4.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/2002594.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/detusesusixer.pdfIn PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/zodes-juviwuxosubul-xefuzovonufe.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.pdfIn PDF document text
    • https://site-1039430.mozfiles.com/files/1039430/ropebopipopuvijibegen.pdfIn PDF document text
    • https://site-1042985.mozfiles.com/files/1042985/45216572475.pdfIn PDF document text
    • https://site-1043599.mozfiles.com/files/1043599/5458071158.pdfIn PDF document text
    • https://site-1042593.mozfiles.com/files/1042593/foredi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0147/0366/files/tw64_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5447/9515/files/civilization_6_xbox_one_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6317/3016/files/korugojop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9495/7470/files/dudomazonujasugowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3683/3954/files/rosiwasisivelasinitiro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0344/7968/files/unidad_5_leccion_1_test_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3427/4723/files/fonizozobabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5338/3581/files/shape_of_p_and_d_orbital.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/5597/5062/files/22461716434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/1316/0350/files/my_summer_car_guide_steam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5977/1557/files/78152294406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/absolute_monarchy_definition_in_your_own_words.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_off000094de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94DE 5236 bytes
SHA-256: d3b98417497f2ac03978de70b2aeaceeb4e906804f21e9f2ca657cce9703485c
font_01_sfnt_off0000a6ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6AE 14920 bytes
SHA-256: beed1771629914e8db3a9f12fb0e06782546ee2184ec5eee4750aca4ff832ee9

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