Malicious PDF — malware analysis report

Static analysis result for SHA-256 c13af16b652765dd…

MALICIOUS

PDF

55.0 KB Created: 2020-08-14 19:02:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b97c666e8e159fbd2ba7423e67f2b051 SHA-1: eed346c71c3936fa784c7c0613eaf8d490892118 SHA-256: c13af16b652765dd3529dff77d5242c678d5389da8a7118c5d46d0563319b40a
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a lure promising a "free shopify booster theme" and embeds numerous links. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/pify. The document body, though partially corrupted, also contains this URL and a large list of embedded URLs, many pointing to shopify.com, likely to appear legitimate. The primary attack pattern is a phishing lure to redirect users to malicious sites.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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+shopify+booster+theme
    • http://files.eatsntreatssandusky.org/uploads/1/3/1/6/131636819/3126912.pdf
    • https://cdn.shopify.com/s/files/1/0432/6824/3624/files/risk_assessment_tools_techniques_and_their_applications.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/nolilasekenegirabilikox.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8178/files/wowokaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/5507/7781/files/python_argparse_list.pdf
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/5625126111.pdf
    • https://cdn.shopify.com/s/files/1/0436/4356/8278/files/ant_downloader_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2819/files/23179424027.pdf
    • https://cdn.shopify.com/s/files/1/0438/8293/8520/files/dixilowetotevizezodurud.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5276/files/wonexegonefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3538/4225/files/jemipa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/jarapisapemo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/zasewenafurodiso.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 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c29.bin
3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C29 6440 bytes
font_01_sfnt_off00006c1d.bin
fcc19d48e8b010a6a0facc179112a112d521a879ded8ec7d4f953d98be9347a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1D 4776 bytes
font_02_sfnt_off00007c5f.bin
3eadf3ff1ae85f7a2dd8be852d633ca148c1d24200a16cbd4325889adc5789c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 2140 bytes
font_03_sfnt_off00008639.bin
28a43c50ed925d70a52aa12f19dce20a5c1adf8b7a9576e07f77a3fb20fa56d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8639 10704 bytes
font_04_sfnt_off0000ab04.bin
010fedfb0e8455d497fb8a6767d0ed7089474232cfc9291a6c65c70cfd9a5baa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB04 16096 bytes
font_05_sfnt_off0000bfdb.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFDB 4324 bytes

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