Malicious PDF — malware analysis report

Static analysis result for SHA-256 a36f0c77d9e9c39d…

MALICIOUS

PDF

44.8 KB Created: 2020-08-10 20:32:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d9e9f26d4949df9edf1c8c6f52d34ee SHA-1: d67914c662fe71bef378ed9c534ea14da9059492 SHA-256: a36f0c77d9e9c39dab76420c8e9e6e4b090c9821d6f77737daf0e6a3ce9f11a5
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a manual for an Electrolux kitchen appliance. The document also functions as a link farm, pointing to numerous other PDFs hosted on various domains, likely to improve search engine rankings and distribute malicious links. The primary malicious intent appears to be redirecting users to harmful content via the ttraff.com URL.

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=ayudante+de+cocina+electrolux+manual+pdf
    • http://files.vantechlibrary.org/uploads/1/3/1/4/131483955/8597970.pdf
    • http://files.belmonthypnosis.net/uploads/1/3/1/4/131409009/cc8426d66f94262.pdf
    • http://gogege.fatgirlrunn.com/uploads/1/3/0/7/130775350/ae79ddea3c.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/kawabezegizibutijig.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/certificado_medico_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/zezamogutekawof.pdf
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/pidam.pdf
    • https://cdn.shopify.com/s/files/1/0437/7398/4919/files/blood_group_test_report.pdf
    • https://cdn.shopify.com/s/files/1/0438/0593/3730/files/hey_there_delilah_guitar_tabs.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83390791822.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xikidewutuxazumal.pdf
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/bestimmter_und_unbestimmter_artikel_englisch_bungen.pdf
    • https://cdn.shopify.com/s/files/1/0433/5163/8175/files/76092367309.pdf
    • https://cdn.shopify.com/s/files/1/0439/1275/7400/files/kuremif.pdf
    • https://cdn.shopify.com/s/files/1/0431/9323/7665/files/19686769891.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6953/files/81633409358.pdf
    • https://cdn.shopify.com/s/files/1/0437/8663/3374/files/39017501099.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_off000070c5.bin
bd65dd8178aeaec61302f2e7a27b200473de637d9183d6790bcb718f35800911		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70C5 5284 bytes
font_01_sfnt_off000082ac.bin
adc0b48e9a3fe0e7f1d29e6966a4a6446cda6e119bfb72a78ebdcf55ba5e324f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82AC 10452 bytes

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