Malicious PDF — malware analysis report

Static analysis result for SHA-256 abab16f002728915…

MALICIOUS

PDF

39.5 KB Created: 2020-08-26 21:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbac2f1bad9fc105903cfb0ff95abc70 SHA-1: 4071143ef495c3e98e2ec7951ddb561da387c02f SHA-256: abab16f002728915a0a2867804d917ab07838c4f75034c49b51bff23baf82eae
160 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body and heuristic firings strongly indicate an advance-fee scam lure, aiming to trick users into clicking malicious links. The presence of a link farm suggests an attempt to distribute malicious content or phish for information.

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=really+really+pdf
    • http://files.rewndusa.com/uploads/1/3/1/3/131398125/4463757.pdf
    • http://jefowudo.onexeveryone.org/uploads/1/3/1/6/131637354/dokigelojiwowi-tutotovudigajom-velovozanevalo-suvadopufak.pdf
    • http://files.nailandbeauty.co.nz/uploads/1/3/1/4/131411688/b8d640c79.pdf
    • http://files.hempothecary.com/uploads/1/3/1/8/131856602/fatuledar.pdf
    • https://cdn.shopify.com/s/files/1/0461/6683/5352/files/angulos_formados_por_bisectrices_de_un_triangulo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kefemomorevogik.pdf
    • https://cdn.shopify.com/s/files/1/0431/1125/2132/files/lejumamepovogik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sosivizugepu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/58449388940.pdf
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/politische_philosophie.pdf
    • https://cdn.shopify.com/s/files/1/0437/3997/1738/files/aquiles_y_la_tortuga.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4547/files/33483613954.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdf
    • https://cdn.shopify.com/s/files/1/0429/1330/0647/files/3758121756.pdf
    • https://cdn.shopify.com/s/files/1/0430/5344/9367/files/51509271131.pdf
    • https://cdn.shopify.com/s/files/1/0447/9139/8561/files/karoxexez.pdf
    • https://cdn.shopify.com/s/files/1/0432/3367/3380/files/wipuviwisasefaliwen.pdf
    • https://cdn.shopify.com/s/files/1/0436/9616/0921/files/buluwigalotaro.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_off00005d2f.bin
8be38aed7ce78eb59018207be0984d60c93f4e6b61e193a2f7f120252a4c92bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2F 4964 bytes
font_01_sfnt_off00006e32.bin
b0a36569bce6ceb107de1258e88ff7d63b7b599722ca612d4815041206191871
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E32 10500 bytes