PDF malware analysis — malicious · 2cb5ba3f97e3a6ad

MALICIOUS

PDF

67.2 KB Created: 2020-08-07 04:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a71a9c41b1de0f43de2f9207c7d0197a SHA-1: 42a0f89e9460546f4108131df0b3fe5c23c1ee3d SHA-256: 2cb5ba3f97e3a6adc4ae0bb59b897ef74d16357d099cb476b99d81048052f779

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to 'spelling bee words 5th grade pdf' and a URL pointing to a redirector. This suggests the document is a lure to a malicious site, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=spelling+bee+words+5th+grade+pdf
- http://files.minilivestock.com/uploads/1/3/2/7/132740415/38a223c.pdf
- http://files.peakhealthcaremaryland.com/uploads/1/3/1/4/131406816/rizapisopasiraluzoga.pdf
- http://files.myhoosierhearth.com/uploads/1/3/2/7/132712206/nomefetube_mefinujulosuna_jopapukowuber.pdf
- http://files.shamancellardoor.com/uploads/1/3/1/3/131397964/6ce58414.pdf
- http://files.handsfreehectare.com/uploads/1/3/2/7/132740408/39ffc6.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
- https://cdn.shopify.com/s/files/1/0431/2186/8960/files/jojolijakomit.pdf
- https://cdn.shopify.com/s/files/1/0437/8473/2829/files/joribazosafika.pdf
- https://cdn.shopify.com/s/files/1/0432/6549/1107/files/suwebafomagare.pdf
- https://cdn.shopify.com/s/files/1/0429/5471/9395/files/simple_balance_sheet_example.pdf
- https://cdn.shopify.com/s/files/1/0438/7468/0987/files/89456690177.pdf
- https://cdn.shopify.com/s/files/1/0433/0130/6526/files/54379840853.pdf
- https://cdn.shopify.com/s/files/1/0431/0152/0023/files/dusojenarunukenuxokumola.pdf
- https://cdn.shopify.com/s/files/1/0431/2553/8970/files/kudabumekuliwop.pdf
- https://cdn.shopify.com/s/files/1/0432/7620/6238/files/rexake.pdf
- https://cdn.shopify.com/s/files/1/0436/3301/6982/files/97766948655.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00009e77.bin` `863d51e059da3cf57a3430e4bb6196b95d14c286482d2c1d26a82ed2a09c4f53`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E77	5764 bytes
`font_01_sfnt_off0000b21d.bin` `998efa58359ffd422f5d8cda1bb4a6ff6b6047731e578f1cffca1b8a7422940b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB21D	13356 bytes
`font_02_sfnt_off0000da3a.bin` `e6a88cfc01f43570ff08e321f5aa0dedc1046b6ad8817a31eb9c7d2ec1d705cd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA3A	10772 bytes

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