Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9aab7eccdbb3851…

MALICIOUS

PDF

47.6 KB Created: 2020-08-08 23:06:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a14bb69b70d06540da3ece31eeff284c SHA-1: 657242d1e59515404a98be68e15e643de4e11230 SHA-256: e9aab7eccdbb3851e02470446efca8903a646cf9db69eca334acd8da11852cc5
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=averroes+obras+pdf`. This indicates a likely attempt to direct users to malicious content or phishing pages. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning tactic. No scripts were extracted from this sample.

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.cc/pify?keyword=averroes+obras+pdf
    • http://depax.secaucusfire.org/uploads/1/3/0/7/130740596/9217795.pdf
    • http://files.photographybyphilodell.com/uploads/1/3/2/6/132681304/524ef68edb43.pdf
    • http://files.prescottvalleylittleleague.com/uploads/1/3/1/4/131452922/085baca6f.pdf
    • http://files.skippysfrenchtoast.com/uploads/1/3/0/7/130775734/rijepidokasewama.pdf
    • http://files.kaitlynnaisling.com/uploads/1/3/1/4/131453031/fofarizotil-vabemazilusira-ganewatizusi-zuritav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9540/9311/files/94884647836.pdf
    • https://cdn.shopify.com/s/files/1/0440/9117/9160/files/voltaire_candide_ou_l_optimisme.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/45493824976.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/16917502478.pdf
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/38639518334.pdf
    • https://cdn.shopify.com/s/files/1/0431/1361/1413/files/nikon_d7000_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/5230421783.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/sirobudimetogukukobifalu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/sajesuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/8119/3885/files/susemowip.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/gesakob.pdf
    • https://cdn.shopify.com/s/files/1/0433/2381/8139/files/xedokupexijifawupumewes.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/ditenumuluxojuf.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_off00007daf.bin
83a0e451f836181018e6efd31a310c0046c953c4c75e2a75d2e8166c57b519a5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DAF 5192 bytes
font_01_sfnt_off00008f6b.bin
cc60ea9f66a3cd0718af394a6135d67412633f639365999e0b1b49eeef7f51a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F6B 9980 bytes