Malicious PDF — malware analysis report

Static analysis result for SHA-256 b44d2c87a74a37d3…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 20:00:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8aa2dd05a5c22129693a8a4eb11905e0 SHA-1: 8823cb01c9b1a726e455fd20ecebfd3573df8040 SHA-256: b44d2c87a74a37d35d611dd575e35e9bc70d426df2769d93c6cfff7d1a300b5f
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body text, though heavily obfuscated, contains a reference to the malicious URL. The heuristic firings indicate the PDF is acting as a redirector and contains a link farm, suggesting an attempt to drive traffic to malicious infrastructure.

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=green+supply+chain+management+journal+pdf
    • http://vajeroja.myportlandtherapist.com/uploads/1/3/1/4/131407178/pafaduleda.pdf
    • http://files.shamanicarawakpriestess.com/uploads/1/3/1/3/131380343/3839298.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5813/files/gegebuxavisodunoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/conformational_analysis_of_cycloalkanes.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/mosuxudagapo.pdf
    • https://cdn.shopify.com/s/files/1/0440/1758/2230/files/58668262205.pdf
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/kelpstone_pet_battle_guide.pdf
    • https://cdn.shopify.com/s/files/1/0441/0294/2872/files/64439078575.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/92477443519.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6324/files/56008510110.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/68987299248.pdf
    • https://cdn.shopify.com/s/files/1/0434/2313/7957/files/lixalujojavezazug.pdf
    • https://cdn.shopify.com/s/files/1/0431/4421/6730/files/anticipatory_grief.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_off0000617d.bin
ec3ca9ba9ae0799072b9d116d3d19702cddfd7cce20647a1a11f8e4fe74a85de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x617D 5776 bytes
font_01_sfnt_off00007501.bin
c634c5e68a072f4b2f7afb3b43106d9c3fa4a89e81d3033c3891c74746793eac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7501 10428 bytes

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