Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d4de03ac1687e0…

MALICIOUS

PDF

37.8 KB Created: 2020-08-16 21:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8916b0b6bdbfd9cac16d1ea47fdd537 SHA-1: 75fbdca32a8e34a7bd1a7557dd58d6b338afce62 SHA-256: 00d4de03ac1687e034f91008609a2470ca8af928a878f7bf828f8b157fb81d21
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a mass of external links, including a critical link to a known malicious redirector at `https://ttraff.com/pify?keyword=evidence+of+evolution+lab+worksheet`. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution. The presence of numerous Shopify links, some benign and some unknown, indicates an attempt to blend malicious links with seemingly legitimate ones.

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/pify?keyword=evidence+of+evolution+lab+worksheet
    • http://files.lunanguyen.com/uploads/1/3/1/4/131454345/nopizo.pdf
    • http://votibip.davidtaylorphotographer.com/uploads/1/3/1/4/131407241/9c257.pdf
    • http://files.suzannewales.com/uploads/1/3/0/7/130776864/zagukemuwigeposugoz.pdf
    • http://files.martincashsculpture.com/uploads/1/3/1/0/131070113/7250124.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/6670/3516/files/36620557655.pdf
    • https://cdn.shopify.com/s/files/1/0430/6498/3703/files/5578695879.pdf
    • https://cdn.shopify.com/s/files/1/0437/8234/0770/files/table_saw_workstation.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/guzupitu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8288/1947/files/7905056633.pdf
    • https://cdn.shopify.com/s/files/1/0437/0504/1051/files/sintomas_de_anemia_megaloblastica.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/81169914777.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/sikofob.pdf
    • https://cdn.shopify.com/s/files/1/0432/7633/7318/files/jupasud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049ad.bin
5d425bc17ede3125bd283e61ab114a6425b13b4cac3886754d4adfdfad9ff8bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49AD 5304 bytes
font_01_sfnt_off00005bb6.bin
7535745894a878991206b50562a0b41456b1ad0d1788cdd92b2b3d6f4050d6d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB6 9632 bytes
font_02_sfnt_off00007c8f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F 4324 bytes

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