Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f2021d9443060ab…

MALICIOUS

PDF

63.8 KB Created: 2020-08-19 03:28:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8c28c323b0f62d9fb5f3e4a446a16cc SHA-1: 4f2a8814108c8b42f77183f84b5147b117d10a37 SHA-256: 1f2021d9443060ab9d363cb6ceeb272e5bc23e112989a91d2ea8b3701bfb6a16
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to a 'urine culture test report sample' and a URL that appears to be part of a lure. The presence of a malicious redirector URL strongly suggests the intent to lead the user to a malicious site.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=urine+culture+test+report+sample
    • http://tuwamibi.usceeri.com/uploads/1/3/1/6/131637021/9227714.pdf
    • https://cdn.shopify.com/s/files/1/0433/7962/2040/files/autocad_2010_32_bit_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5522/files/34677809795.pdf
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/50301042431.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2034/files/belimbing_wuluh_untuk_hipertensi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2600/files/92672397199.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/20959610643.pdf
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/44372752630.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4557/files/34949093514.pdf
    • https://cdn.shopify.com/s/files/1/0439/4388/7016/files/functions_of_business_law.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/kizijekerapazenebaw.pdf
    • https://cdn.shopify.com/s/files/1/0449/5795/8299/files/bamford_classification_of_stroke.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5910/files/2194864725.pdf
    • https://cdn.shopify.com/s/files/1/0441/2728/9496/files/import_jquery_in_react.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/1/0449/5795/8299/files/bamford_classification_of_s

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a827.bin
ec7b5bbd876cfb4248292a2c3e87be32b18753370bbea2054874548eaaa6c136
pdf-font-stream PDF embedded font (sfnt) at offset 0xA827 5068 bytes
font_01_sfnt_off0000b947.bin
f05c9492fa17488989a80df0d8c1dccbe95e2f2ac38a0123d520732fefd776f9
pdf-font-stream PDF embedded font (sfnt) at offset 0xB947 10288 bytes
font_02_sfnt_off0000dca2.bin
3aad8f736d68201c4a8387338ab5b73e899d8d5dbdf6ead162eb48e90402f37f
pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA2 16092 bytes