Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ff05b045a2167f1…

MALICIOUS

PDF

38.3 KB Created: 2020-08-08 15:55:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64b0f494f01b9abf2938358a5b2f2902 SHA-1: 3682c8f0d23fe0b51534bd48ab9770cff1e22ab0 SHA-256: 7ff05b045a2167f10fae5724a649ad75bf1da148210c8a1953167a271cc57744
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.com. The document body, though partially corrupted, contains text suggesting it is a 'preposition of place worksheet pdf british council', which is likely a lure to disguise the malicious intent. The primary goal appears to be redirecting the user to a malicious site for further exploitation or phishing.

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=preposition+of+place+worksheet+pdf+british+council
    • http://files.enigmashetlandponystud.com/uploads/1/3/1/0/131070483/4779006.pdf
    • http://pewusus.petiakostadinova.net/uploads/1/3/0/7/130738799/0a4846656456f9.pdf
    • http://mafipatel.berrycommunitychurch.org/uploads/1/3/0/7/130739415/2217668.pdf
    • https://cdn.shopify.com/s/files/1/0433/7231/4778/files/wijabix.pdf
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/maxesiji.pdf
    • https://cdn.shopify.com/s/files/1/0434/4234/0007/files/69079091067.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/pdf_to_word_converter_nitro_crack.pdf
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/widewakosekoxuras.pdf
    • https://cdn.shopify.com/s/files/1/0439/4621/3544/files/aerodynamics_for_naval_aviators_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/14450971493.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/41648345193.pdf
    • https://cdn.shopify.com/s/files/1/0429/7824/6815/files/16667838523.pdf
    • https://cdn.shopify.com/s/files/1/0428/1224/4134/files/wakabetajonegadop.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5474/files/zigibegoxi.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_off000057a5.bin
3f8ebb21c876668647ef619d8d2868d3d930efbf8e55383bf40ab50135adaf8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57A5 5540 bytes
font_01_sfnt_off00006a7e.bin
61e1cda96dc4320a123882c11798e0c063fb2d5beeb5479a89aff32c5d3b0d9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7E 9888 bytes

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