Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc3ada0726d12ce7…

MALICIOUS

PDF

38.6 KB Created: 2020-08-13 22:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 144b01587a2852bd797326422d670cbf SHA-1: a023b5124c2e5ebaf56b6022d29e378c23e3faae SHA-256: fc3ada0726d12ce799c4aeee8d36b419e8dd33f04011007b0db55a88cff7b239
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to another URL, identified as a malicious redirector. This is further supported by the presence of a mass external PDF link farm, suggesting an attempt to distribute malicious content. The document body contains a call-to-action phrase, indicating a lure to click the embedded 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/pify?keyword=buker+ba+pase+song+free
    • http://nejos.ayusewingproject.org/uploads/1/3/1/4/131452890/3562669.pdf
    • http://files.blueframeart.com/uploads/1/3/2/3/132303270/1514d4317e9c191.pdf
    • http://files.truthillustrated.net/uploads/1/3/2/6/132695813/5f5709697909038.pdf
    • http://gowevuze.deficientautobiographicalmemory.com/uploads/1/3/0/9/130968931/76fbbc0c4f.pdf
    • http://files.woodstockumc.org/uploads/1/3/1/0/131070161/5841979.pdf
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/43169949143.pdf
    • https://cdn.shopify.com/s/files/1/0437/6831/6055/files/seselutotunobuvavuse.pdf
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/mowufegupepekuzurapone.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/pigasefesinisofifugavejoz.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9603/files/63419659427.pdf
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/75544990368.pdf
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/sekubunowi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/54082016887.pdf
    • https://cdn.shopify.com/s/files/1/0430/5800/4117/files/nacionalismo_vasco.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/79478917808.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/storie_brevi_da_leggere.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/social_phobia_scale_sps.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/
    • https://cdn.shopify.com/s/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000583e.bin
d961d119ad288122a6ff4b55c3a7814083239013187d9d20f7c8339ce41101b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x583E 5292 bytes
font_01_sfnt_off00006a54.bin
515bd9134c26f8d2571cbcabdbeb351cfeb0dfb0bfc07a2832c0573f4a6cb6e8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A54 10332 bytes