Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f069b80be36e946…

MALICIOUS

PDF

45.3 KB Created: 2020-08-12 16:10:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc209510b9a48e64d78f427c3736db10 SHA-1: de4ffa25b8865be160e069db0fa3bc01faecfd42 SHA-256: 1f069b80be36e9464fdca10f3f9b247fda4228a36ebcb361e46c227d0a77762a
128 Risk Score

Malware Insights

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

The PDF contains a deceptive link disguised as a download for 'Time and work aptitude questions pdf download'. This link redirects through 'ttraff.cc', a known malicious redirector, to a PDF hosted on Shopify. The PDF also contains a mass external PDF link farm, with many links pointing to Shopify-hosted PDFs, likely for SEO manipulation or to host further malicious content. The presence of a download button lure reinforces the deceptive nature of the document.

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.cc/pify?keyword=time+and+work+aptitude+questions+pdf+download
    • http://bolel.addicted2sugar.com/uploads/1/3/0/8/130873851/4832788.pdf
    • http://suvimapa.joansantus.com/uploads/1/3/1/0/131070872/dobilakivov.pdf
    • http://files.annamarievalenti.com/uploads/1/3/0/7/130776069/jadidegupirur.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdf
    • https://cdn.shopify.com/s/files/1/0434/2163/0631/files/lejatexeliribisiduloxeliw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3450/files/58306248924.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wiwatubaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/37320568446.pdf
    • https://cdn.shopify.com/s/files/1/0438/0911/2226/files/xibuxesuf.pdf
    • https://cdn.shopify.com/s/files/1/0429/3305/9737/files/2158134298.pdf
    • https://cdn.shopify.com/s/files/1/0428/4986/1791/files/apicultura_moderna.pdf
    • https://cdn.shopify.com/s/files/1/0431/4365/9677/files/cultivo_mercadotecnia_e_inocuidad_alimenticia_de_agaricus_bisporus.pdf
    • https://cdn.shopify.com/s/files/1/0429/6117/4687/files/dupigesimofifaxizog.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_off00007230.bin
acae616cdddef124e0f42c28c5393235df41a6f5a0707d46bd7e70ff718458ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7230 5416 bytes
font_01_sfnt_off00008495.bin
950ce7f48b6b30aa774fcacd3574d63558a41b7d3fe9a8c069926cc819cbf550		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8495 10540 bytes

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