Malicious PDF — malware analysis report

Static analysis result for SHA-256 a11d0bcb7d18f2c4…

MALICIOUS

PDF

39.0 KB Created: 2020-08-15 23:25:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 675e3f6291a00e7764af1700ce77837c SHA-1: 81f4aaad518c0050c2a7c88bfede447046979e0d SHA-256: a11d0bcb7d18f2c479eea26f938d22648655617de36a23410010e2f47203ece1
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a redirector, indicating a phishing or scam attempt. The primary malicious link is https://ttraff.cc/wb?keyword=vodafone%20direct%20debit%20form%20pdf, which is designed to lure users into clicking it under the guise of a legitimate form. The document body, though heavily obfuscated, contains references to this lure and other URLs, further supporting the malicious intent.

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/wb?keyword=vodafone%20direct%20debit%20form%20pdf
    • http://nazenone.t-ris.com/uploads/1/3/0/7/130740069/8598353.pdf
    • http://files.caroldmarsh.com/uploads/1/3/1/4/131482886/kibojezur_widavodukexo_vazulaxo.pdf
    • http://files.valerieniloinsigh.com/uploads/1/3/1/6/131637271/lenale_velajovefe_jivoluxesusor_rodamisotipijew.pdf
    • http://files.stmarysbeauly.org/uploads/1/3/1/6/131607103/medopowakejot.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/laberegamumozavapotonixo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/gilokugivovejijifikasu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/20140007762.pdf
    • https://cdn.shopify.com/s/files/1/0428/4694/5436/files/foniwotenifepufuxofekiju.pdf
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/www._kambikuttan._net_cartoon_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/2386/5768/files/68759658524.pdf
    • https://cdn.shopify.com/s/files/1/0430/1930/5113/files/linear_regression_and_the_normality_assumption.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/biology_class_9_notes_karachi_board.pdf
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/nibasubifusolepak.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/cee_lo_green_forget_you_lyrics.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_off00005c1c.bin
6de1d816c7927fd1d75ef39d01858c1ac0c1bbfd277a4d675a516befddab920a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1C 5196 bytes
font_01_sfnt_off00006db1.bin
45d4fd424891dd2ca821534df8349875926e42560d2eb173276cd3401e503118		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB1 9840 bytes

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