Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdd00bc2f4589dee…

MALICIOUS

PDF

40.9 KB Created: 2020-08-30 11:28:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 644bec0020dbc230b05b4f334eac11d2 SHA-1: 5f6514ed7620c789903ff1eabd0ac823f08d33d1 SHA-256: bdd00bc2f4589dee31aa7ccf1e15e74c23060858831d325ddc9b219657eed086
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers this heuristic. This suggests the document's primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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/wix?keyword=civil+war+crossword+puzzle+quizlet
    • https://cdn.shopify.com/s/files/1/0461/8960/9109/files/60835469183.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6942/files/hmm_tracking_report.pdf
    • https://cdn.shopify.com/s/files/1/0445/8423/9268/files/a4_cuboid_net.pdf
    • https://cdn.shopify.com/s/files/1/0432/8515/1897/files/jinetok.pdf
    • https://cdn.shopify.com/s/files/1/0435/5915/7921/files/mafaburozojokutuligavuru.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50398535586.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/fexovi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2219/5608/files/xapatanewixiwerata.pdf
    • https://cdn.shopify.com/s/files/1/0437/5114/5626/files/google_sheets_textjoin_new_line.pdf
    • https://cdn.shopify.com/s/files/1/0433/2204/8667/files/bufizubomowitikesuni.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/14459289358.pdf
    • https://cdn.shopify.com/s/files/1/0429/5504/7068/files/zapruder_film_frame_313.pdf
    • https://cdn.shopify.com/s/files/1/0436/1384/7710/files/wubepijofajizul.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0471/files/75481474240.pdf
    • https://cdn.shopify.com/s/files/1/0433/8656/8860/files/zokekekolu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1125/1099/files/82664859530.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_off00006148.bin
782cfbdf7e2f1fae3672a2ac0a0a9230ab00ef9639afae37fdd9bdee4466aaec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6148 5300 bytes
font_01_sfnt_off00007373.bin
5057b6f76d3a15296957feb4f360696ba31abd09705e38515f43158ba2033022		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7373 10356 bytes

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