Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0aa30b4c567fe68…

MALICIOUS

PDF

48.1 KB Created: 2020-07-30 19:03:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7c5e62d0540b9bb7e2977c1279b67e7 SHA-1: 2896e337b06c1a806470073f9bec58a5dcc55dd1 SHA-256: e0aa30b4c567fe68b7615dd941a710b6388187be4168d0bcba72ba0d40e226e9
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body is heavily obfuscated, but the presence of a malicious redirector URL suggests an attempt to lure users to a harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=ardisia+elliptica+pdf
    • http://files.plainsedgechiropractic.com/uploads/1/3/2/3/132303068/zusudanegiburu_wijepesuxit_nakotedug_zuxut.pdf
    • http://files.spinninpolestudio.com/uploads/1/3/1/4/131453250/fb9d91e0.pdf
    • http://files.distantseasministries.com/uploads/1/3/0/7/130775379/7348583.pdf
    • http://files.paulinepschneider.com/uploads/1/3/2/6/132696104/64348bc.pdf
    • http://files.vmacevents.com/uploads/1/3/1/4/131438389/d16cd2f.pdf
    • http://files.distant
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/29883456948.pdf
    • https://cdn.shopify.com/s/files/1/0437/2214/5943/files/28285767061.pdf
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/mibubebineleditaxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1794/files/49180880236.pdf
    • https://cdn.shopify.com/s/files/1/0433/1307/0238/files/zepafasekepirizowuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/3382/9277/files/69875304647.pdf
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/kozixogewewew.pdf
    • https://cdn.shopify.com/s/files/1/0429/5399/8489/files/60665730262.pdf
    • https://cdn.shopify.com/s/files/1/0440/9671/6952/files/68614711793.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekefokatonerosabiwifeva.pdf
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/bojobosujisoxupadeto.pdf
    • https://cdn.shopify.com/s/files/1/0432/3534/4539/files/9878340032.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_off000080bc.bin
0f2fae5895e0f43c18695001246f57153c35ad5343dace5e14828c9883ed2c71
pdf-font-stream PDF embedded font (sfnt) at offset 0x80BC 4712 bytes
font_01_sfnt_off000090cb.bin
bf4add83deebf458dc8ba3770f6bf2b98a0b8a766dfb6b98ef5454e53c241c72
pdf-font-stream PDF embedded font (sfnt) at offset 0x90CB 10180 bytes