Malicious PDF — malware analysis report

Static analysis result for SHA-256 5065d2aacb799aae…

MALICIOUS

PDF

45.9 KB Created: 2020-08-21 08:51:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c81503b6154cc8beaedb87ac6f7a27a SHA-1: 508513f4042168c4082a26bb692dc5f5490b5dc1 SHA-256: 5065d2aacb799aae1862d76c5daa95d62a661b23d05f575573a71152b225cbb1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to 'ttraff.ru', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'the entertainer sheet music original pdf' and the malicious URL, suggesting a lure to disguise the malicious intent. The presence of a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for phishing or malware distribution.

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.ru/pify?keyword=the+entertainer+sheet+music+original+pdf
    • http://files.artofsales.us/uploads/1/3/1/4/131408170/6ab81cfe7bc2189.pdf
    • https://cdn.shopify.com/s/files/1/0448/1312/3745/files/boolean_algebra_and_gate_networks.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/bosch_classixx_5.pdf
    • https://cdn.shopify.com/s/files/1/0444/7302/4679/files/low_back_strengthening_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zizamazigunonafimav.pdf
    • https://cdn.shopify.com/s/files/1/0445/8535/3380/files/mediheal_ac_dressing_ampoule_mask_ex_review.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/syllable_structure_examples.pdf
    • https://cdn.shopify.com/s/files/1/0435/9720/1576/files/ahmet_hamdi_tanpnar_mahur_beste.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95181885481.pdf
    • https://cdn.shopify.com/s/files/1/0432/9095/1848/files/37872560778.pdf
    • https://cdn.shopify.com/s/files/1/0432/9655/5168/files/22286098560.pdf
    • https://cdn.shopify.com/s/files/1/0430/8529/9874/files/ias_mathematics_notes_download.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_off000076ba.bin
e57b2e67a0568e007abe68b90655bacc6ef0c72ccc28d13ab520030c90b9a5c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BA 5516 bytes
font_01_sfnt_off00008944.bin
5bfa9c4241db74e4819dc3b7e2646e11b9a80ab7c4153297de96e50ff8245948		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8944 9880 bytes

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