Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fbe1a1ef69d8cb7…

MALICIOUS

PDF

42.5 KB Created: 2020-11-02 20:06:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 459389b6413fcaaf09c3da963d5fd2d7 SHA-1: 9279ec2efb684d951aa8155a1346d4722e5d2edf SHA-256: 0fbe1a1ef69d8cb7ad960ae0cdbd4fdd164b70516b3a8bfe02e6849946e448ab
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?keyword=gaseous+solution+examples'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the redirector link strongly suggest an attempt to lure the user to a malicious site, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=gaseous+solution+examples In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377410/normal_5f8de12388a75.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/b08ead00-ddbd-431f-bf12-1e49c1c6867b/15870520236.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/tanowexagajiv.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/cae_exam_preparation_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0315/8433/files/zoomer_dino_manual_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0980/1880/files/japandroids_the_house_that_heaven_built_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8432/3252/files/arabic_words_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6386/8573/files/city_of_angels_camp_building_department.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c97516b-a6be-47a3-8f84-697fc685419a/hymn_piano_accompaniment_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94295e9f-1ed3-4760-897e-0b7d9c4aea18/19131960390.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e6a28c7-858e-4cc8-b2f9-3310e434ee57/58829905224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3544/9238/files/jct_intermediate_contract_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/7372/3300/files/rudojelepobesape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9b808d8-17d4-4e70-9d55-65911fd931f2/xakamorutus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8964/7534/files/woxeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/876af84e-ee3e-4b90-abeb-42a0ca94f87e/12149510965.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_off000068be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68BE 4968 bytes
SHA-256: 93352d140cbb87aeafcbf0b508178cf396b07da58af6285dbdfaa14ecd4fdef2
font_01_sfnt_off0000799c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x799C 10480 bytes
SHA-256: 98806010c57f93ff4acf0d4b624334609cc7be10ea5b928e85f98bfd4a26a7f8

Open this report in the interactive analyzer, or submit your own file for analysis.