Malicious PDF — malware analysis report

Static analysis result for SHA-256 d952e70f957f023c…

MALICIOUS

PDF

50.7 KB Created: 2020-08-13 01:22:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c70af55c0f20a3b41078399150ec5009 SHA-1: cec3fc375014252e9231bdcf900b02787da1659d SHA-256: d952e70f957f023c537b70a8f1978850aa7522842f6b2fc913b0e94861c98041
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, pointing to `https://ttraff.cc/wb?keyword=the%20elegance%20of%20the%20hedgehog%20pdf%20download`. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs, many hosted on `cdn.shopify.com`. The document body, though partially corrupted, contains the same malicious redirector URL, suggesting the primary intent is to lure users to malicious infrastructure via a deceptive download link.

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/wb?keyword=the%20elegance%20of%20the%20hedgehog%20pdf%20download
    • http://files.dariadavidov.com/uploads/1/3/0/8/130814055/xepukifusolu.pdf
    • http://lebagif.honoluluintertribalpowwow.com/uploads/1/3/1/4/131454065/9eed0df.pdf
    • http://files.stephenfrausto.com/uploads/1/3/1/4/131406288/4985403.pdf
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/dumbbell_exercises_chart.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/ratejekobivajij.pdf
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/regubaxakajo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3254/2369/files/94597570278.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3696/files/lifudanaxumonexo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9949/6351/files/14174279649.pdf
    • https://cdn.shopify.com/s/files/1/0454/6029/1742/files/acute_myeloid_leukaemia.pdf
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/vafusenuzejoxuxojipono.pdf
    • https://cdn.shopify.com/s/files/1/0454/6487/9256/files/encyclopedic_dictionary_of_pipeline_integrity.pdf
    • https://cdn.shopify.com/s/files/1/0437/7221/5448/files/50341232787.pdf
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/jisuge.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_off000062dd.bin
9b86ef7025c28230c936d554687cfb9377789047ad083e3e9eb6a88c0d04b31a
pdf-font-stream PDF embedded font (sfnt) at offset 0x62DD 5184 bytes
font_01_sfnt_off00007494.bin
51bdcf4804a78c506240cfbdcff4bc320142b6936dc218f632f07c7f73d715fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x7494 16808 bytes
font_02_sfnt_off0000a819.bin
fbeccb1482ee56052ed809ec6cb7dfbc577d51b9212e43fffabc93e29761b6bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xA819 16248 bytes