Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0e30a14f1a2b45…

MALICIOUS

PDF

37.4 KB Created: 2020-08-14 21:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4988f64005f0632a3597ded1ea66ecd0 SHA-1: ea1db76cfb4c14805ce96fa549e829eb63bd56c9 SHA-256: 1c0e30a14f1a2b451e5f12bf0e12f36d4aa17e84e4bc2a26854b22a2640991ad
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Adobe acrobat reader dc gratis italiano', suggesting a lure for a fake software download. The primary malicious IOC is the redirector URL, which is likely used to host or chain to further malicious content.

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=adobe+acrobat+reader+dc++gratis+italiano
    • http://files.uniquestationers.com/uploads/1/3/2/8/132814433/xolojabuxarose.pdf
    • https://cdn.shopify.com/s/files/1/0434/5085/9670/files/qcm_atomistique_paces.pdf
    • https://cdn.shopify.com/s/files/1/0432/3105/1943/files/dosuxilewadipekoxosof.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/90651515171.pdf
    • https://cdn.shopify.com/s/files/1/0436/1748/4957/files/mesurajibakekudajope.pdf
    • https://cdn.shopify.com/s/files/1/0430/4017/8333/files/62212455145.pdf
    • https://cdn.shopify.com/s/files/1/0429/5062/3385/files/pavunid.pdf
    • https://cdn.shopify.com/s/files/1/0433/8024/4643/files/acumed_distal_radius.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/56105624133.pdf
    • https://cdn.shopify.com/s/files/1/0440/7482/7941/files/nilipuvapezuwi.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_off0000546f.bin
10103bae02a2c33df6d152d38b388f0c727d7a01d57490214b26d66af93ad63c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x546F 5236 bytes
font_01_sfnt_off00006647.bin
e335c9445210da89b9010a4353234f47eea9428c104763a60e5fd613397bdfba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 10356 bytes

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