Malicious PDF — malware analysis report

Static analysis result for SHA-256 525aeda91b981d12…

MALICIOUS

PDF

47.5 KB Created: 2020-10-30 22:49:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7a3c5569be63815ea81688c5a59cf3d0 SHA-1: 30305628185f0bbc1edb0e6e9a8361d07d34af70 SHA-256: 525aeda91b981d127c99df7a41ea8ce3f8621f2dcf43dba4ad772fddbd95ad18
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'commercial salad spinner' and the malicious URL, suggesting a lure. The presence of many external PDF links, some benign and some potentially malicious, indicates a link farm or redirection strategy. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or redirection attempt.

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.club/123?keyword=commercial+salad+spinner+australia In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368489/normal_5f9116936661a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379615/normal_5f950eac0b621.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0508/8965/4470/files/zapesedanavasesikuruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/9754/2822/files/group_equivariant_convolutional_networks_blog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2028/5614/files/mamotagewubogirefivijox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/3222/6203/files/51040744032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/3870/7359/files/sazaxivadetizeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8815/8106/files/what_do_stay_frosty_mean.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1889/7573/files/93766150734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3707/2801/files/maryland_mens_soccer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5738/1027/files/bose_sounddock_series_ii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4494/5051/files/advanced_manufacturing_systems_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4689/4240/files/minecraft_bedrock_hacks_using_cheat_engine_on_flash_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1936/8097/files/wixidasufojusaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0487/0986/1526/files/convert_to_png_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C18 5124 bytes
SHA-256: 7d08b6bf2e9e97dedc6bc35cf41bf8bb9e67fae9672c6e2cf850f322cb06a881
font_01_sfnt_off00007d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D59 11176 bytes
SHA-256: 1df331b4d4b6dd19e72a278b909404a2cbbdd94a2edbe9ed7176331ab98fb431
font_02_sfnt_off0000a328.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA328 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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