Malicious PDF — malware analysis report

Static analysis result for SHA-256 21c409f9659e93a0…

MALICIOUS

PDF

48.1 KB Created: 2020-08-12 21:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f89ce410b5e1157824f7962913c12e25 SHA-1: 01d839a8c101e4a50a4718548eaefed1c5dad654 SHA-256: 21c409f9659e93a02e049869fab7296e56c419c9168e4aa8ef444b0f9c81161f
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the link. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, further supporting a malicious intent to distribute content or redirect users. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=free+download+marathi+kadambari+in+pdf+format
    • http://files.sidleystandup.com/uploads/1/3/0/7/130775942/3089407.pdf
    • http://files.riveterlaw.com/uploads/1/3/2/8/132815298/vixogozis.pdf
    • http://vuweme.adelanteyouthmission.org/uploads/1/3/1/0/131070364/witenuviluzagi-fubegepoxed-piponosibemofi.pdf
    • http://files.seasmokepipesandpottery.com/uploads/1/3/1/4/131437423/377c2f.pdf
    • http://files.louisemartinart.com/uploads/1/3/1/3/131383864/vudevopelol-nojitafoz-karonogelaje.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0440/4045/4294/files/nosuwokobefoninoxirobof.pdf
    • https://cdn.shopify.com/s/files/1/0433/3617/1679/files/zupufoxeluko.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/80229684025.pdf
    • https://cdn.shopify.com/s/files/1/0436/1574/8253/files/65176888239.pdf
    • https://cdn.shopify.com/s/files/1/0428/8076/2023/files/dodaxiwopoxin.pdf
    • https://cdn.shopify.com/s/files/1/0437/9397/3405/files/30373920340.pdf
    • https://cdn.shopify.com/s/files/1/0440/5588/8022/files/vuwisep.pdf
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/47513981859.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/history_of_islam_timeline.pdf
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/78691601719.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15125842299.pdf
    • https://cdn.shopify.com/s/files/1/0437/6697/2577/files/ninja_forms.pdf
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/punjabi_last_name.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f5e.bin
980325abac14792541019b1d3001ea3a7f1f644e38070f36b48c60a0f7648c42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5E 5352 bytes
font_01_sfnt_off00007178.bin
ba3c7aa54edd3aeecb83cff6d3d1ca48c4e1cbb9f96394f1cb32c80346d38925		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7178 10128 bytes
font_02_sfnt_off00009466.bin
7c6c4833b2333717a0ecef3648bc73467d351e40199f958ac693943472c90394		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9466 9020 bytes

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