Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba21a6fe23abcb57…

MALICIOUS

PDF

43.0 KB Created: 2020-10-30 07:31:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 8562cc84e8b5f45e00c047bac88f3c6e SHA-1: 708967eb8d04f8c93cd2812336d0cdd9d09d31b0 SHA-256: ba21a6fe23abcb572d1a6fbcd5aa7bf66cfef2d66a90456ccba56cced52a99be
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is flagged by heuristics. The ML classifier also strongly indicates maliciousness. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. No scripts were extracted, but the presence of a malicious link points to a phishing or malware delivery attempt.

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://ttraff.club/pify?keyword=carol+e.+reiley+linkedin In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383806/normal_5f98273448838.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/7918331.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f899816c9490.pdfIn PDF document text
    • https://ziripovopibew.weebly.com/uploads/1/3/0/8/130874468/d5e41b8380b73c.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/1/0483/0933/8276/files/xokatar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4703/0436/files/mini_camera_wifi_para_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2766/8381/files/18980871120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5734/8247/files/genowevapukiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9248/5317/files/16240809149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0377/1542/files/65443119355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6438/files/testament_of_sherlock_holmes_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E39 3908 bytes
SHA-256: 06d9c73ba06307046d44d21e1f3c851fd6f573058976b1cf3889eb094f97d41c
font_01_sfnt_off00006c23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C23 4744 bytes
SHA-256: 9d936c4a4e777daafab0ed27cc9fba6661b7ee67ed3c5fc5eda271d1361f1955
font_02_sfnt_off00007c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5C 10308 bytes
SHA-256: 1dcca808d5c8699ba33eb52fa2b7bacedd6830a472461e8b1f203ae1da11c231