Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ccdb01b5604f06d…

MALICIOUS

PDF

44.3 KB Created: 2020-08-20 09:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b59b1f2f5801f0434517a86bbac0b00 SHA-1: a1aecd05b0bf0a2a06ba5093d5b40609be9fb15c SHA-256: 4ccdb01b5604f06d901a0d1b5d8b00c5ea15fcfdc65bd5dc14dd5f917a8ea4c8
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=live+tv+channels+philippines+free'. This indicates the document's primary purpose is to trick users into visiting this malicious URL. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm or SEO poisoning tactic to distribute the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=live+tv+channels+philippines+free
    • http://files.packerintersections.com/uploads/1/3/2/6/132695730/621a8.pdf
    • http://zorujem.realdealfundraising.com/uploads/1/3/2/6/132683071/garugekeb_vifoxomusigu.pdf
    • http://luwire.rockhollowwoods.org/uploads/1/3/0/7/130775403/medaxoluleju-basatujowidopi-koxigunijex-xowiw.pdf
    • http://lijugepak.redriverministries.com/uploads/1/3/1/4/131455328/4062930.pdf
    • http://files.johnhoma.com/uploads/1/3/1/4/131406434/44a46d7f55d35.pdf
    • https://cdn.shopify.com/s/files/1/0449/3407/0440/files/c_programs_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/pavoderetabuxopebitu.pdf
    • https://cdn.shopify.com/s/files/1/0446/9896/0026/files/3208_cat_engine_parts_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0433/4551/0568/files/55690689007.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/murray_m2510_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/7644/2530/files/julius_caesar_modern_translation.pdf
    • https://cdn.shopify.com/s/files/1/0430/9021/5073/files/wuxowujuborabuxif.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdf
    • https://cdn.shopify.com/s/files/1/0436/8809/9993/files/alpha_beta_pruning_python.pdf
    • https://cdn.shopify.com/s/files/1/0437/6009/1287/files/xapixexed.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000624a.bin
0fe6a29357bee71bde9c8c6fd52942f3152337f91209464d72557e588e81a034		 pdf-font-stream PDF embedded font (sfnt) at offset 0x624A 4784 bytes
font_01_sfnt_off00007277.bin
aa065748d2f740f3a40a36719d722519569ab167fcaa26a9b45ff20bcb08e5c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7277 10420 bytes
font_02_sfnt_off00009624.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9624 4324 bytes

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