Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f677242105d8f6…

MALICIOUS

PDF

44.5 KB Created: 2020-08-05 17:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6009934534b97be6fe613fb09fc80fe2 SHA-1: ca92d82ec6b9ad94a32f10eccfb8ef712b3c49cf SHA-256: 56f677242105d8f686ffabe6009b6a49545c3ecea434b29209aca7284ea75c11
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains numerous embedded links, a common tactic for SEO spam and redirecting users to malicious sites. One critical heuristic identified a PDF link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=time+value+of+money+questions+and+answers+pdf'. Another heuristic flagged the document as an advance-fee scam lure, suggesting the links are intended to trick users into fraudulent schemes. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/pify?keyword=time+value+of+money+questions+and+answers+pdf
    • http://files.veescape-info.com/uploads/1/3/2/6/132682868/9365733.pdf
    • http://files.fortytwobooks.com/uploads/1/3/1/3/131398374/ba49261c1e.pdf
    • http://files.courtneyenos.com/uploads/1/3/1/4/131407067/4625632.pdf
    • http://files.nursingandpublichealth.org/uploads/1/3/2/6/132681199/kirusebut.pdf
    • http://files.theorrickbuilding.com/uploads/1/3/1/4/131483154/gusojida.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/10236984883.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/digivajolodozo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/82869864534.pdf
    • https://cdn.shopify.com/s/files/1/0432/5251/4971/files/pewuvugojivojoguten.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/sibivoxizolovogoxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6158/3776/files/keras_functional_api.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/95961276019.pdf
    • https://cdn.shopify.com/s/files/1/0438/5875/5749/files/kekojok.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/anamnesis_dan_pemeriksaan_fisik_anak_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/vuzerivuxopisepisepetufis.pdf
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/97853484330.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_off00006db6.bin
972ae8a33087d7d65cb839e145cefbf07c52cfd5d6e1109b20abce0b0fe85fc3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB6 5516 bytes
font_01_sfnt_off00008081.bin
87b649dedac35fa2b4956cc0cacf5fbeb9385c44b204d4b4ecb577aa503891f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x8081 10684 bytes