Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3439bce6262d9d5…

MALICIOUS

PDF

50.9 KB Created: 2020-08-20 04:51:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d265403a1fa04c5d4e64ba7dd840caf6 SHA-1: 680aa7c34762088ca902d6a6a9149d5fd48fb0ca SHA-256: f3439bce6262d9d5ceaa186dfac6b88b37eba733a2de5b5d63812d76b6fce641
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link leads to a URL that is part of a link farm, suggesting an attempt to distribute further malicious content or phishing pages. 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=lookbook+template+psd+free
    • http://riduga.doublebeehoney.com/uploads/1/3/1/6/131607062/dixojafizukosu.pdf
    • http://files.thomscer.com/uploads/1/3/2/6/132681212/wonewoxuxen.pdf
    • http://kapeked.gaiabamman.com/uploads/1/3/0/8/130814328/sediwexir.pdf
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/miterujotakal.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/definition_slope_intercept_form.pdf
    • https://cdn.shopify.com/s/files/1/0440/2076/0734/files/periodic_table_of_elements_2017.pdf
    • https://cdn.shopify.com/s/files/1/0434/4889/3606/files/auxiliary_verbs.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/87850237113.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2106/files/zolodi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/83490343021.pdf
    • https://cdn.shopify.com/s/files/1/0428/3331/3958/files/dafezekazinenipoju.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/importance_of_vehicle_tracking_system.pdf
    • https://cdn.shopify.com/s/files/1/0435/5837/1496/files/silokudabem.pdf
    • https://cdn.shopify.com/s/files/1/0434/4869/6993/files/penerizetibawimeniz.pdf
    • https://cdn.shopify.com/s/files/1/0438/9643/8936/files/79431418069.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_off00007d35.bin
179c4500439023206937be4996ec106016883ea0c40761409084a0aea5c73e0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D35 4968 bytes
font_01_sfnt_off00008e0f.bin
0814760f5f04bb0654bd4a38604d70dffdd08aea848442d11b54f7b30af9b0b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0F 10128 bytes
font_02_sfnt_off0000b0c0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB0C0 4324 bytes