Malicious PDF — malware analysis report

Static analysis result for SHA-256 20c52616e29e7653…

MALICIOUS

PDF

43.0 KB Created: 2020-08-09 03:17:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9c616aaafe152d1c6e9ef4da1960fb9 SHA-1: bae18ae0277bccdb0154bdde0de3e9e3ecbcd42c SHA-256: 20c52616e29e765369fb096c2bdc418c9377c49e09d4c094a11b07eb7af9ebce
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure related to 'iifa awards 2020 pdf download', likely to trick users into clicking the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, many pointing to benign Shopify domains, but the primary malicious redirector is the key threat.

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=iifa+awards+2020+pdf+download
    • http://files.wildflowersoftexomachapter.com/uploads/1/3/1/4/131454620/wofekutodalagot_watuw_junativo.pdf
    • http://files.thetri-fectagroup.com/uploads/1/3/2/6/132681342/44280.pdf
    • http://files.phillyyouthdancefest.com/uploads/1/3/2/6/132682051/3f86c299a51.pdf
    • http://files.theelectricalfirm.com.au/uploads/1/3/0/8/130814611/5976714.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/cabbage_farming_in_zambia.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2536/files/el_caudillismo_en_bolivia.pdf
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/26431199253.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/31936237206.pdf
    • https://cdn.shopify.com/s/files/1/0435/9448/1823/files/prozac_nation.pdf
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/definition_of_religion.pdf
    • https://cdn.shopify.com/s/files/1/0436/0231/3373/files/kilolumiduzapad.pdf
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/54657837007.pdf
    • https://cdn.shopify.com/s/files/1/0440/5706/7685/files/fapukowodotidusavikafo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1746/2182/files/boston_tourist_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/punudoj.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006955.bin
fd2cb02fc8298cf2326f86cbf4bc0fd63cbd32455d297f6360ba6022f249a146
pdf-font-stream PDF embedded font (sfnt) at offset 0x6955 5340 bytes
font_01_sfnt_off00007ba2.bin
e87688a7ea5703a5b069f214220d38548e09511ca4dff20e33a1d2b17e6a9848
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA2 10408 bytes