Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8a1049fc727a496…

MALICIOUS

PDF

33.8 KB Created: 2020-09-17 09:26:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea6eae9651665267f56fac61c3760aae SHA-1: e86b79aea8585dc2d66ac6569b05bdfc1b46b064 SHA-256: e8a1049fc727a496968625bbfc20d1353a440607e9f60133c0b661cc84b91ff6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier also flagged this PDF with high confidence. The presence of a mass external PDF link farm suggests a tactic to distribute malicious content or phishing lures through a large number of seemingly benign documents. The primary malicious URL identified is https://ttraff.link/wix?keyword=everything+pachislo+manual.

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://ttraff.link/wix?keyword=everything+pachislo+manual
    • http://neremi.mylappetbed.pet/uploads/1/3/1/1/131164537/8a716774cc0f3a.pdf
    • http://kogoga.casbonbuildingservices.co.uk/uploads/1/3/0/8/130873853/59ac337f5abb.pdf
    • https://cd7a842a-f97e-4c5c-836f-d0239714b42a.filesusr.com/ugd/cd81e9_8c725e47c070476c8133458bffaf6a05.pdf?index=true
    • https://b55242d8-0b50-4dfd-b5f6-1b9e998ae538.filesusr.com/ugd/2a1429_def0909742a44cc68a0935a46f73c7ee.pdf?index=true
    • https://86f7088c-3566-45ee-8a36-5985f351a18a.filesusr.com/ugd/c88839_5476f3add8cd49e69c68e9d35a700ce3.pdf?index=true
    • https://9ba4bd71-1f71-4737-9cf6-0561f09383cd.filesusr.com/ugd/430cb2_2519cc43a0d340e0b8895750751587e7.pdf?index=true
    • https://bab3394d-c630-43d3-a77c-8284b0462111.filesusr.com/ugd/c88839_c3d1259cb0444aab968965d706532908.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0437/2067/1400/files/60747114236.pdf
    • https://cdn.shopify.com/s/files/1/0434/5892/0605/files/4769495539.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/speedy_current_affairs_2020_in_english_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/9100/8418/files/13676738768.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/newuraj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6315/files/multiple_choice_blank_answer_sheet_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/5105/6284/files/12813612662.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004604.bin
1a67bf189627a7222e8244b94aa2f5d9876f2d7de9210fb21753c5dfa1c699b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4604 5464 bytes
font_01_sfnt_off0000588c.bin
efb807d41199b2e3297df7721b8d04567b058378d6a958dcf40943a720c9bc22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x588C 10008 bytes

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