Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7c7d6b6558aa2f…

MALICIOUS

PDF

60.1 KB Created: 2020-08-20 03:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 534de7f385c4cc579fd4a67a1b95e1c7 SHA-1: cd083dd19a75db43ecc64085dfa7bf442ca2a388 SHA-256: 9b7c7d6b6558aa2f776b541bc4d29aa5200f4ca0c1b254e54bf2a83c89809017
120 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Ajanta pharma annual report' and a URL pointing to a redirector. This suggests a phishing or social engineering attack aiming to redirect the user to malicious content.

Heuristics 3

  • 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.
  • 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=ajanta+pharma+annual+report
    • http://files.enactuscalgary.com/uploads/1/3/1/4/131453124/e66df3fc43def4.pdf
    • http://zipas.teachlearnlead.org/uploads/1/3/0/7/130775350/0a3e1e.pdf
    • http://koxejova.thelifeatthehelm.com/uploads/1/3/1/4/131452846/5884262.pdf
    • http://mufareb.arthurgietzelt.com.au/uploads/1/3/2/8/132814930/dovisafeka.pdf
    • https://cdn.shopify.com/s/files/1/0431/3645/0717/files/cuisinart_food_processor_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/atf_box_setup_9._50_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8368/5274/files/basijitixemowe.pdf
    • https://cdn.shopify.com/s/files/1/0438/9352/2587/files/fojubogekegu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0049/4237/files/19974537899.pdf
    • https://cdn.shopify.com/s/files/1/0434/6524/4832/files/rafi_biochemistry_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/6286/1730/files/paponevigeno.pdf
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/66650081454.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/givite.pdf
    • https://cdn.shopify.com/s/files/1/0435/3697/3983/files/brain_fever_symptoms_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0440/6116/3670/files/amharic_to_english_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0437/9171/2405/files/duwewanutogiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/dulce_et_decorum_est_pro_patria_mori.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_off0000ae4a.bin
bbf1b2c35711ad9d4597732f59769c6169cd23e1da090612df465c7ab265145f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4A 4944 bytes
font_01_sfnt_off0000beed.bin
c68fa8401cd16eb535e111b459a3991bb25bd5ebf9c5ebdc15f072dc3b59fb84		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEED 10616 bytes

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