Malicious PDF — malware analysis report

Static analysis result for SHA-256 53e1ccb5a30b931c…

MALICIOUS

PDF

58.0 KB Created: 2020-07-29 11:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 401b678a23c3dbf8c6533aafc6f97603 SHA-1: 97ab82609ab932ac486158fdb87ccf865a24a4d9 SHA-256: 53e1ccb5a30b931c5d300917b767896dd8428d1c1783e0954e04a74adac87f20
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, disguised as a link to 'english bible stories for kids pdf'. This suggests a social engineering attack aiming to trick users into visiting a malicious site. The PDF also contains a large number of external links, indicating a link farm or SEO manipulation tactic. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the payload.

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/pify?keyword=english+bible+stories+for+kids+pdf
    • http://files.michellexiao.net/uploads/1/3/1/6/131607346/xugex-xotosuzunixovir-kuvareduxifo-fufetatarifu.pdf
    • http://files.estattooremoval.com/uploads/1/3/2/8/132815365/xekagigafowag-numetojuka-mexezedofaka-libodenunuv.pdf
    • http://files.afmsupplements.com/uploads/1/3/2/3/132302815/972851.pdf
    • http://files.wonderful-morocco.com/uploads/1/3/1/4/131437402/zekaketupaje.pdf
    • http://files.lkhair.co.uk/uploads/1/3/1/0/131070166/1971664.pdf
    • https://cdn.shopify.com/s/files/1/0430/1550/4029/files/72316105602.pdf
    • https://cdn.shopify.com/s/files/1/0432/7152/0409/files/17841302200.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7777/files/tipavowojofapizob.pdf
    • https://cdn.shopify.com/s/files/1/0434/0491/8941/files/vigepukuroramuxariba.pdf
    • https://cdn.shopify.com/s/files/1/0431/8517/6736/files/rejotud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0304/3230/files/58410986972.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/mutikofozaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/somupuwerig.pdf
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/lavafitilugiputuvibut.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/42336018474.pdf
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/56537697575.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/5495748530.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_off0000a62b.bin
2e1d4fad4add4f12fba5b1e1b7031aaa37623ff55349701af0db2c47860e4652		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA62B 5044 bytes
font_01_sfnt_off0000b73e.bin
8579f0f3ac91385f45476e813081ee38e34cabf5fc339cdda2fb859b642c92a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB73E 10352 bytes

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