Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecafc233943d54f6…

MALICIOUS

PDF

97.8 KB Created: 2020-08-15 06:13:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8428990a7561b1ec4f6417fba2c3a38a SHA-1: 9465f04e8f1ce2ea55aa92da76b3a6ef5f02303f SHA-256: ecafc233943d54f6348bc182ccd760d3adddca484a425d2c40c32227488ef15f
160 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users into believing they have won a prize or are due a payment, requiring them to pay a fee for delivery. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a lure related to 'recycle bin apps for android mobile'.

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=recycle+bin+apps+for+android+mobile
    • http://files.uicbcq.org/uploads/1/3/1/4/131454114/6177993.pdf
    • http://files.nuskin-success.com/uploads/1/3/1/0/131070611/zezopufabonoriw_lixesonibidig_kagirasenufak_verifavinuju.pdf
    • https://cdn.shopify.com/s/files/1/0436/5792/0677/files/doctor_who_9th_doctor_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2715/files/call_of_cthulhu_7th_edition_character_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/8157/8136/files/54975710181.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/detexolutonoku.pdf
    • https://cdn.shopify.com/s/files/1/0436/0205/1235/files/64953487003.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/datev_anlagenbuchhaltung.pdf
    • https://cdn.shopify.com/s/files/1/0433/9299/1399/files/dovodotatufa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1880/3605/files/wufevibi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0562/files/37476215559.pdf
    • https://cdn.shopify.com/s/files/1/0434/9027/9574/files/35584278074.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_off0001446f.bin
5001b7714b00c79423ed717a1da4f51439dc506627bade3e707ec3a82a9f14b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1446F 5548 bytes
font_01_sfnt_off00015736.bin
4535c16f6af6061345e32e2b8b6e6302279b9b2090329deaa32f59accebc7ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15736 10308 bytes

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