Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce100aad78dcbe86…

MALICIOUS

PDF

65.0 KB Created: 2020-08-14 03:04:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68bce2b6fbfd1d348f269664bded6e58 SHA-1: 12d5a53855cfc588a0157de45613a6a978500039 SHA-256: ce100aad78dcbe86f22aa9561f94464d98f7c2c2aab323046e0e402e055d8afe
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to domains associated with link farms and SEO poisoning. One critical heuristic identified a link to a known malicious redirector, 'ttraff.ru', which is likely used to deliver a malicious payload or redirect users to a phishing site. The document body itself is heavily obfuscated and contains the malicious URL, suggesting it's designed to lure users into clicking the link.

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.ru/wb?keyword=john%20mearsheimer%20offensive%20realism%20pdf
    • http://files.dinorowan.com/uploads/1/3/1/3/131383998/cf915faa.pdf
    • http://semojipu.peanutbutterandjoey.com/uploads/1/3/0/8/130873804/kotuj.pdf
    • http://files.sevenstarsselfcatering.co.uk/uploads/1/3/1/3/131379552/4308544.pdf
    • http://files.4waybasics.org/uploads/1/3/1/0/131070246/vebikafizebopujuka.pdf
    • http://files.beitersdepartmentstore.com/uploads/1/3/0/8/130873822/ruker.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/xeseposagenawuweba.pdf
    • https://cdn.shopify.com/s/files/1/0435/9307/2808/files/pekedomaduniraduvosag.pdf
    • https://cdn.shopify.com/s/files/1/0438/0554/0509/files/94250927340.pdf
    • https://cdn.shopify.com/s/files/1/0434/1281/6039/files/tuloxadavaviwexinudutir.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/lamb_to_the_slaughter_summary.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/mudefig.pdf
    • https://cdn.shopify.com/s/files/1/0449/4698/1023/files/vamedatevunaw.pdf
    • https://cdn.shopify.com/s/files/1/0437/5976/3617/files/deficiencia_de_vitamina_b12_sintomas_neurologicos.pdf
    • https://cdn.shopify.com/s/files/1/0429/4616/6943/files/analog_and_digital_signal.pdf
    • https://cdn.shopify.com/s/files/1/0438/5603/5990/files/94121547396.pdf
    • https://cdn.shopify.com/s/files/1/0444/2347/9462/files/caida_de_tension_en_conductores.pdf
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/23342569211.pdf
    • https://cdn.shopify.com/s/files/1/0438/9086/8379/files/87911416629.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_off0000bdc7.bin
04f18b2230ea0c26f517d0a4b875786988dd741b44185261556239462e70a1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xBDC7 5332 bytes
font_01_sfnt_off0000cfb8.bin
fefe7e88e78ae5fba610675a3a8e46a1ca21d4f2fbe6ab0e5d0f96dde30679d8
pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB8 11600 bytes