Malicious PDF — malware analysis report

Static analysis result for SHA-256 124b6028083b8944…

MALICIOUS

PDF

37.9 KB Created: 2020-08-14 19:21:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c786110e7a95e4732b8df15c820bce1 SHA-1: 50b5a606841c2089cac57d241922b4a9ebb3f2ae SHA-256: 124b6028083b8944084c8a5edabc8926a21c73ce2ed84c6ebf56c9a14cfc4e35
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure for free PowerPoint templates, which is consistent with phishing or scamming attempts. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful 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/pify?keyword=free++powerpoint+template+ppt
    • http://files.acupunctureofcolumbia.com/uploads/1/3/0/8/130814157/3914363.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/my_catholic_faith_catechism.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/vaputubenedasu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4926/3004/files/fundamentals_of_deep_learning_buduma.pdf
    • https://cdn.shopify.com/s/files/1/0433/1762/4990/files/2437651054.pdf
    • https://cdn.shopify.com/s/files/1/0429/6297/6921/files/pikififolopujono.pdf
    • https://cdn.shopify.com/s/files/1/0440/9350/5688/files/wogenariwiwalavovisezef.pdf
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/jajizubupugajapiduvegik.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3073/files/mr_coffee_keurig_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/89716345612.pdf
    • https://cdn.shopify.com/s/files/1/0444/8839/2871/files/happy_birthday_tagalog.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_off000059dd.bin
b64bf8768a256972990fde3373cbd3c6743494758249dc15bfdbe33b6d272cb1
pdf-font-stream PDF embedded font (sfnt) at offset 0x59DD 4836 bytes
font_01_sfnt_off00006a46.bin
1c0cee27838e389772eeddba05057af95705c0f4ac708f3c323b67663f96ca91
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A46 9652 bytes