Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d471bed26d285f7…

MALICIOUS

PDF

35.9 KB Created: 2020-08-23 00:11:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 778f3d4bd6fe076dc73889557954b485 SHA-1: 0364f7568253f44eadd35d92dc833c581269a7aa SHA-256: 5d471bed26d285f787840a63dac53327c0b3a04f1d7fcc231dc736f2fd813272
154 Risk Score

Malware Insights

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

The PDF contains a link disguised as a search result for "Blackmail odia movie original song" which redirects to a malicious URL. This URL is part of a link farm, suggesting an attempt to generate traffic or distribute further malicious content. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=blackmail+odia+movie+original+song
    • http://getazod.villaabadi.com/uploads/1/3/2/6/132680813/kiganuvip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/3314/0127/files/35394628966.pdf
    • https://cdn.shopify.com/s/files/1/0444/1836/7654/files/the_nature_of_statistical_learning_theory_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/1523/2923/files/functionality_matrix_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4031/files/google_maps_uk_street_view.pdf
    • https://cdn.shopify.com/s/files/1/0438/3234/4736/files/sofupo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6072/3865/files/john_deere_lx176.pdf
    • https://cdn.shopify.com/s/files/1/0433/7975/3121/files/the_works_engineering_design_process_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8106/3838/files/bodemamozum.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/40541876921.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/extraction_of_caffeine_from_tea_leaves.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_off00004d1a.bin
56f1caaf8fd98bc92e4784500139159852d5f21c060fb849149d3ce9ab05dd1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D1A 5432 bytes
font_01_sfnt_off00005f86.bin
fb43b24680bce1ab5a784f665995b8109db4c8da0b74667fcd6974acdea5647d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F86 10472 bytes