Malicious PDF — malware analysis report

Static analysis result for SHA-256 44cb796ba35f9415…

MALICIOUS

PDF

37.1 KB Created: 2020-07-30 15:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a184185b595f5535556d32696089c7a SHA-1: c809fe028765a1ef1358c131d4c2ddc529dcfbea SHA-256: 44cb796ba35f94158e6514c49949a63d8825b2a68241b2f7af7801267a268f32
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Wordly wise 3000 book 5 lesson 3 pdf', suggesting a lure to attract users searching for educational content. The primary malicious IOC is the redirector URL, which likely leads to further malicious sites.

Heuristics 3

  • 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.
  • 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=wordly+wise+3000+book+5+lesson+3+pdf
    • http://files.fauxmesticgoddess.com/uploads/1/3/1/8/131856381/gevaxil.pdf
    • http://files.huntercustomtattoos.com/uploads/1/3/1/3/131380558/raguripuzamoz.pdf
    • http://files.motherworkscville.com/uploads/1/3/2/7/132741109/ririb_gokomado_rutudapejejifu.pdf
    • http://files.gunmanualsonline.com/uploads/1/3/0/7/130775649/benajuzeja.pdf
    • http://files.rana-tarabishi.com/uploads/1/3/0/9/130969652/letinu.pdf
    • http://files.rana-tarabishi.com/u
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/duzabemedekexuduwezan.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0302/files/36470145518.pdf
    • https://cdn.shopify.com/s/files/1/0431/4945/9605/files/51090643161.pdf
    • https://cdn.shopify.com/s/files/1/0434/4122/5880/files/31979509833.pdf
    • https://cdn.shopify.com/s/files/1/0431/3461/5706/files/37422543097.pdf
    • https://cdn.shopify.com/s/files/1/0437/8322/5506/files/poranakimixakubefatetimat.pdf
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/40606499776.pdf
    • https://cdn.shopify.com/s/files/1/0435/9703/7730/files/varopewetuxuku.pdf
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/38279453817.pdf
    • https://cdn.shopify.com/s/files/1/0429/7228/3033/files/pusuzojunimazetozubiro.pdf
    • http://www.corestandards.org/assets/CCSSI_ELA%20Standards.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055b6.bin
0afb34f8f4ae47e8a0bea27df7f4483077b97f05707342340358508a9e8631e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55B6 5376 bytes
font_01_sfnt_off0000681c.bin
b254c99a62949927ac0f7f1f76eb58ee29750a0dd4896d9576a6bf322deeae78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x681C 9132 bytes

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