Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd3f3b991fa7f4da…

MALICIOUS

PDF

40.5 KB Created: 2020-08-30 10:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0650803bec08dac74462bd56c7be805f SHA-1: f1825a90d23bf641fe4b8208d0fd67e0a69752d7 SHA-256: fd3f3b991fa7f4da68132912edb56995391b3e6a4e7f5d0803e9389f1125e239
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, also contains the same URL. This indicates the primary intent is to redirect the user to a potentially harmful external site.

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.me/wix?keyword=stuart+wilde+silent+power+pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9605/files/neralaji.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/jeevan_shanti_lic.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/56305729763.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/aadhaar_card_password_not_working.pdf
    • https://static.usrfiles.com/ugd/79e0dc_caad86602f144465ac9b09390f14c2dc.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_55e06cb25ed544ab8d0e8fd9a0634780.pdf
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/vafazuvuxufofejoliv.pdf
    • https://cdn.shopify.com/s/files/1/0431/0132/3421/files/tratamiento_de_blastocystis_hominis.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6076/files/50645163162.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6818/files/skinelement_anti_aging_cream.pdf
    • https://cdn.shopify.com/s/files/1/0432/9642/4096/files/guided_meditation_for_inner_peace_and_love.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/sobiwe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/38842448186.pdf
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/arreglos_bidimensionales_java.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_off000060d7.bin
d4d23dfa347485a467db683406411622ba1d0b493e327c173547f8c1daba92e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D7 5232 bytes
font_01_sfnt_off000072bf.bin
5d3c3dae942d74a2100c6e717e672340115c125980788b55c7f69674228447e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BF 10184 bytes

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