Malicious PDF — malware analysis report

Static analysis result for SHA-256 48780287e6154153…

MALICIOUS

PDF

57.6 KB Created: 2020-08-20 07:01:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e091b1fde94ccc50360c7dc335815b47 SHA-1: 6e0c9970428a86e07c5291d754100af05ae6c4ab SHA-256: 48780287e6154153d443716ab28d733b12498d847a028bfb12dbf761b512beb2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=annual+report+of+reliance+infrastructure'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. 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=annual+report+of+reliance+infrastructure
    • http://pibijetam.helllomegan.com/uploads/1/3/1/3/131384244/tinuv_bazesevevuwume.pdf
    • http://vutetogab.tallahasseezoom.org/uploads/1/3/0/7/130775318/dalevumul_panibusufori_sixufefefobero_fepenakafizena.pdf
    • http://rezojuxir.beeblecounseling.com/uploads/1/3/1/3/131379179/a51dc2e.pdf
    • http://vorupu.waysideresources.com/uploads/1/3/0/7/130740062/jagipi-telanatigu-lapoferekepo-seviwevelatew.pdf
    • https://cdn.shopify.com/s/files/1/0433/4904/9499/files/calendario_2020_para_imprimir_octubre.pdf
    • https://cdn.shopify.com/s/files/1/0430/9218/1145/files/buzab.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3712/files/88379936230.pdf
    • https://cdn.shopify.com/s/files/1/0433/9059/9319/files/kisawidizekajomivexozo.pdf
    • https://cdn.shopify.com/s/files/1/0434/9054/1733/files/ladufodiso.pdf
    • https://cdn.shopify.com/s/files/1/0437/1975/3879/files/normalidad_y_anormalidad_en_psicologia.pdf
    • https://cdn.shopify.com/s/files/1/0432/3917/8399/files/pevafofaguxome.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/python_for_data_science_cheat_sheet_datacamp.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/5994254975.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/
    • https://cdn.shopify.com/s/f

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008f0c.bin
c1806a710bfe55c6ec7f4b6e3e346b17cc9769b5c3cf9fff2ef582d8d3fb283c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F0C 4880 bytes
font_01_sfnt_off00009faa.bin
bbe95b18d96c76ad33917a6098a5ef696ae329977e6c70224d456bc0e991a849		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FAA 12936 bytes
font_02_sfnt_off0000c8e4.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E4 4324 bytes

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