Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d557fd3396066a6…

MALICIOUS

PDF

42.7 KB Created: 2020-09-01 10:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c14601090b3cf959a692c2c5affcebea SHA-1: 7e1311be3a6b630a119935c3838c760b1cc6f221 SHA-256: 0d557fd3396066a6c1c82045cb5c0c968faeb2b16b3042d8d9f9aac03b6a21fc
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded links, masquerading as a movie download, which redirect to a link farm of other PDFs. The primary malicious URL identified is https://ttraff.com/wix?keyword=axl+robot+dog+full+movie, which is flagged as a known malicious redirector. The document's structure and extensive linking suggest an attempt to drive traffic to potentially malicious content or phishing sites.

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.com/wix?keyword=axl+robot+dog+full+movie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/5ecadc_415c5cb62ddc4d31b3d68426fa87a49a.pdf
    • https://static.usrfiles.com/ugd/a467d2_e04ba689c6034996b6282ae3b154aa27.pdf
    • https://static.usrfiles.com/ugd/efb3f0_32739c91955545e488ac56d0be280f60.pdf
    • https://static.usrfiles.com/ugd/96bf9d_5bbab3d4cb894884b40fb53df47d0b98.pdf
    • https://static.usrfiles.com/ugd/c63dba_5242aa1875b542c7964c32241833cb5a.pdf
    • https://cdn.shopify.com/s/files/1/0435/7518/1471/files/24869806419.pdf
    • https://cdn.shopify.com/s/files/1/0434/9516/2022/files/30643078075.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/jugimadusoxapuwolilufi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4570/7166/files/gelakawufikegizev.pdf
    • https://cdn.shopify.com/s/files/1/0434/4388/0093/files/approach_to_chest_pain.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3541/files/tamil_to_english_words.pdf
    • https://cdn.shopify.com/s/files/1/0432/3111/7467/files/26820475514.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/gulavenedoletipemigela.pdf
    • https://cdn.shopify.com/s/files/1/0451/3175/9769/files/data_reporting_analyst_2_salary.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7204/files/ap_treasury_online_challan_form.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000681c.bin
e1d8203c94b86feabdb66cea94e2738289064d65b191b006a72e7550d8bccd08
pdf-font-stream PDF embedded font (sfnt) at offset 0x681C 5096 bytes
font_01_sfnt_off00007969.bin
a3c66239327fbde8bc45a4f6cb5006cb9d11941ac61728ac369fe06606940993
pdf-font-stream PDF embedded font (sfnt) at offset 0x7969 10716 bytes