Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa941af18f5b2ac8…

MALICIOUS

PDF

28.7 KB Created: 2020-09-23 08:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 22b2c7e6c628c588c85f30e9d64aa82d SHA-1: 74899c245235ca221fae07c0ee58f44ad634011c SHA-256: aa941af18f5b2ac8318e8113587d61bd952acb48452013340ee5157f754737b0
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious due to its structure, which resembles a screenshot lure designed to trick users into clicking a link. The embedded URL, https://ttraff.com/wix?keyword=digitech+jml2+jamman+stereo+looper+manual, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 28 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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/wix?keyword=digitech+jml2+jamman+stereo+looper+manual In 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/1/0432/8770/7812/files/innisfree_tea_tree_sheet_mask_ingredients.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7467/4083/files/85595782651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/jumia_online_shopping_cameroon_apk.pdfIn PDF document text
    • https://29f2ca4e-1360-4397-8576-4ac64bb315db.filesusr.com/ugd/9f2514_9deebe1d5a9849f79846a825569398a8.pdf?index=trueIn PDF document text
    • https://6a3f1180-83fe-47db-9ebd-1bb94415dee2.filesusr.com/ugd/40336e_847648bfbdc041de81853727de14f66c.pdf?index=trueIn PDF document text
    • https://8939fe6d-459e-42db-924f-97f652bbfe87.filesusr.com/ugd/4d6844_e60d6811398848c6a1f69ece84236fdf.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2653/8911/files/57132508431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2140/1237/files/3902817355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3347/5737/files/menaderepuxatedetevo.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_off00003a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A6A 5552 bytes
SHA-256: 9c8ae3258701d5c3ae1a7f027261de2428ff62a0dcadc05f09826ee50cefed89
font_01_sfnt_off00004d31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D31 7372 bytes
SHA-256: 62d816fe7b9d53bfa0467226f8d58a02038c517e9b4eee207c230b5e7ce47ead