Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0ef0b2081f9444…

MALICIOUS

PDF

40.6 KB Created: 2020-08-13 16:53:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aebebcc026ef4b6e4b66a2839597fa99 SHA-1: c5eda7d3000c459630ca2c4cdfa1b2cbb1f4edc4 SHA-256: 9c0ef0b2081f944445dd27409e140fe09d97106d580bfcbe6062b6f6cdc877bc
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. It also features a link farm with numerous external PDF links, suggesting an attempt to manipulate search engine results or distribute content. The document body, though heavily corrupted, contains a URL that matches the malicious redirector. 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.com/wb?keyword=buku%20tentang%20jaringan%20komputer%20pdf
    • http://files.picturethistwice.net/uploads/1/3/1/3/131398224/b2b9b11a1a2.pdf
    • http://files.beauceronsleboulanger.com/uploads/1/3/1/4/131406403/6134927.pdf
    • http://bunamax.kellyjacobsonstudios.com/uploads/1/3/0/8/130874493/bd6f0412d59.pdf
    • http://bogodonuf.lcheliotis.net/uploads/1/3/1/6/131607943/7754003.pdf
    • http://files.liregionalemdr.com/uploads/1/3/0/7/130739559/gevulebidoralopumim.pdf
    • https://cdn.shopify.com/s/files/1/0437/9472/7069/files/jivibenapew.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3642/files/75313823908.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/64623766057.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/roblox_paid_script_executor.pdf
    • https://cdn.shopify.com/s/files/1/0435/3612/2008/files/surekunonunumi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/33321434919.pdf
    • https://cdn.shopify.com/s/files/1/0445/9141/5460/files/aneurisma_que_es.pdf
    • https://cdn.shopify.com/s/files/1/0436/0136/3107/files/56324929841.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/2006_honda_ridgeline_owner_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2535/0301/files/54654595929.pdf
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/absorption_and_adsorption.pdf
    • https://cdn.shopify.com/s/files/1/0431/9821/8400/files/algorithms_unlocked_github.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/lixovumadonolopotokuget.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_off00005f90.bin
7870661e5c8710cf8b48ae8a4c4a9bb3c2a072b47fcd894edcafc9c96fca3df9
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F90 5340 bytes
font_01_sfnt_off000071b7.bin
2161e2c696045821992348cb9544be9dab6720ecd96fb1676d73713a03b5acc8
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B7 10432 bytes