Malicious PDF — malware analysis report

Static analysis result for SHA-256 09562002f68c8400…

MALICIOUS

PDF

37.2 KB Created: 2020-08-21 12:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6954e7c8f55ce5689308b5122ea6138f SHA-1: a128b78d5855aaff537934d271b265c0646404e1 SHA-256: 09562002f68c8400e86b395a2aafdaf380fb62a662e1917ede95dc94250b2a04
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. The primary malicious URL identified is 'https://ttraff.cc/pify?keyword=affair+punjabi+song+video+hd', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to disguise malicious activity within seemingly innocuous content.

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=affair+punjabi+song+video+hd
    • http://files.luminstruct.com/uploads/1/3/2/6/132695519/gorefezeb-bewoxabozufan.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0436/8905/0265/files/le_chapon_fin_guide_michelin.pdf
    • https://cdn.shopify.com/s/files/1/0438/6340/8795/files/dirixawesu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6422/files/digital_electronics_and_logic_gates.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/pilijovizer.pdf
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/caste_system_in_nepal.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/bowedatovivapilis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19194700937.pdf
    • https://cdn.shopify.com/s/files/1/0437/9043/4456/files/chaumet_ring_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0461/7866/4602/files/lasanubifufafex.pdf
    • https://cdn.shopify.com/s/files/1/0430/2408/9242/files/49908665374.pdf
    • https://cdn.shopify.com/s/files/1/0447/4336/0663/files/statistical_analysis_of_clinical_data.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_off00004619.bin
9ad4166e79ebf07eab83bb4a387e16daa3622db7add15e56f2bb07e799a4ed90
pdf-font-stream PDF embedded font (sfnt) at offset 0x4619 5336 bytes
font_01_sfnt_off00005830.bin
6e6b637080baa5ec1347e5d8af58e345037df66f734b3d9a741f1f020672f792
pdf-font-stream PDF embedded font (sfnt) at offset 0x5830 9928 bytes
font_02_sfnt_off00007a54.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A54 4324 bytes