Malicious PDF — malware analysis report

Static analysis result for SHA-256 45a3cdac90b08aef…

MALICIOUS

PDF

67.4 KB Created: 2020-08-03 15:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9a02e9d6085d51f65327080a20db45b SHA-1: 2fd2fd407b7a3b8ce12b0fa0b9ecb9ee08d2c797 SHA-256: 45a3cdac90b08aeff1e09c3fcef0ba988ee66508d03caa773e7208cad8d5d67a
128 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to shopify.com domains hosting other PDFs, and one critical link to a known malicious redirector at ttraff.cc. This suggests a link farm or redirection strategy to distribute malicious content. The presence of a 'download' button heuristic further supports the lure-based attack pattern.

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=argala+stotram+pdf+in+sanskrit
    • http://files.fellowshipmsc.com/uploads/1/3/2/7/132710745/1126032.pdf
    • http://files.mikaylamac.com/uploads/1/3/0/7/130738823/femajifaboz.pdf
    • http://files.biblereadingmarathon.org/uploads/1/3/0/7/130739564/3f146005cfb1ab.pdf
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/5039576275.pdf
    • https://cdn.shopify.com/s/files/1/0435/9772/5864/files/74652171235.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/kuzesiragabuzoxijime.pdf
    • https://cdn.shopify.com/s/files/1/0434/0636/0730/files/94199610812.pdf
    • https://cdn.shopify.com/s/files/1/0431/4388/9052/files/faposu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/xubopawipojowixu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/89118479664.pdf
    • https://cdn.shopify.com/s/files/1/0433/9538/3446/files/13211313855.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/laloxifanagofuzutam.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/tisozik.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/5622662358.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/paxotaxazojulilinitulo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/54812918301.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000c94b.bin
e8ee6e21a3e96c258ea05da51603c170b08e3e5b3114762cb4521575efcf5124
decompressed-pdf-stream PDF FlateDecoded stream at offset 0xC94B 17264 bytes
font_00_sfnt_off000089ac.bin
0718088069222451b5d9e389dc21663c6f70399a084c6be9f5292c42f7f05139
pdf-font-stream PDF embedded font (sfnt) at offset 0x89AC 5416 bytes
font_01_sfnt_off00009bff.bin
e2c7bb3c6d2fbc6b9680c858ce58af9e5cd0e4fbc18f33bdd2ad1d5654d08a87
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFF 3772 bytes
font_02_sfnt_off0000a7a2.bin
e09607497770065f4fc79d5cf6e2190559808d082ee87b3be44ed3e725bbea84
pdf-font-stream PDF embedded font (sfnt) at offset 0xA7A2 9768 bytes