Malicious PDF — malware analysis report

Static analysis result for SHA-256 01b2956f4df01f0d…

MALICIOUS

PDF

54.8 KB Created: 2020-08-06 10:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d060a74a7ebb9394f789117f94f9e72b SHA-1: d82382b4c1098b8405a79335792da106f97b642e SHA-256: 01b2956f4df01f0dad0efd1e7038ef553bc9c74b4118ff56837e64535efa1a46
154 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=irritable+bowel+disease+treatment+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains keywords related to 'irritable bowel disease treatment pdf', suggesting a lure. The presence of numerous external PDF links further indicates a link farm or SEO poisoning attempt, likely to drive traffic to malicious sites.

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.com/pify?keyword=irritable+bowel+disease+treatment+pdf
    • http://files.pcccsi.com/uploads/1/3/0/7/130739143/kewejitomaf_difobakakifof_sakak.pdf
    • http://files.truenorthcommunitychurch.com/uploads/1/3/0/7/130739140/pugasufi-ledikuj-razexemiza.pdf
    • http://files.yabbadobrangus.com.au/uploads/1/3/0/7/130776499/9726232.pdf
    • http://files.randallumc.org/uploads/1/3/1/1/131164185/gomugav-vifanoko-todixiromeja.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/3585736588.pdf
    • https://cdn.shopify.com/s/files/1/0437/4131/5223/files/believe_in_yourself_dr_joseph_murphy_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/6295/1062/files/pujojosuxese.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/quincy_2v41c60vc_air_compressor.pdf
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/23411797929.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1924/files/48827424009.pdf
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/afcat_result_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3474/6790/files/gujubudorolibovurifok.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/rajegikime.pdf
    • https://cdn.shopify.com/s/files/1/0434/2356/3925/files/latababisomixifoletoz.pdf
    • https://cdn.shopify.com/s/files/1/0438/3938/9856/files/ledamefuweresibiso.pdf
    • https://cdn.shopify.com/s/files/1/0431/1023/6321/files/mavutekufobuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/fake_street_address.pdf
    • https://cdn.shopify.com/s/files/1/0432/5713/5257/files/pexumivudiposuvigorirof.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/lexidumifinufewisosexe.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009809.bin
088acf8645933d8c5e6bfcd77cc74ebe128d4d1798ce0ec86ba624b0205a857d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9809 5356 bytes
font_01_sfnt_off0000aa2e.bin
ff07098ddaf72359db2a0ce3bab2d8569eb1b3d0ce6dc6a65769f544bcbd4457		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA2E 10552 bytes

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