Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cec7486d0b4849f…

MALICIOUS

PDF

45.2 KB Created: 2020-08-14 11:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57526a905442f6c07c1873655f847c87 SHA-1: 92555451f4ed5832fe8d08e041d4b5f2732f31e1 SHA-256: 4cec7486d0b4849f39a0f523e50b8e543afcf5be491de25399d0443a874b1c54
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=android+file+transfer+computer'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery. No scripts were extracted, limiting the analysis of specific execution chains.

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.com/pify?keyword=android+file+transfer+computer
    • http://files.maactearly.org/uploads/1/3/0/9/130969826/d526e93c3ec.pdf
    • http://gejas.mykitchenkitchen.com/uploads/1/3/2/8/132814930/wakewi.pdf
    • http://faxilani.henryssports.com/uploads/1/3/0/8/130873952/tidozanixudute_kusexamiza_vezorobalu_satug.pdf
    • http://files.healthybalancedbodies.com/uploads/1/3/1/3/131380741/modunajakesufu.pdf
    • http://sijeses.healthiestsickguy.com/uploads/1/3/1/1/131163635/kuleriwovapi-gubelezoxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7753/3856/files/rugadujuxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4050/files/advocare_24_day_challenge_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/kabax.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/36037251959.pdf
    • https://cdn.shopify.com/s/files/1/0433/8761/7436/files/7719084159.pdf
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/html_canvas_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/glencoe_algebra_2_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6971/files/retencion_placentaria_en_vacas.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/78011328395.pdf
    • https://cdn.shopify.com/s/files/1/0433/6559/7342/files/principles_of_musical_acoustics.pdf
    • https://cdn.shopify.com/s/files/1/0433/2617/7438/files/stack_on_safe_manual.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_off00006b31.bin
ae69d47ede8ccf9fecf2dd5938ff535e8d0bd9201ae325bcb2bedc6e7471f1b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B31 5288 bytes
font_01_sfnt_off00007d12.bin
ad9e7cdcfbd5d488f3276eb8e4db112d3567d1d09c5a3099ecdc49759e4677d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D12 13336 bytes

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