Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6ff1177148d598…

MALICIOUS

PDF

48.0 KB Created: 2020-08-08 23:55:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bd066bce696ea69237cebea240aa36e7 SHA-1: 4e0f2f68654d9a43b341240cd8f890b89303a9a8 SHA-256: df6ff1177148d5987318498f40d9210b4b5232cff1870aa366f5cbee72588aef
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files, a technique often used to inflate search engine rankings or distribute malicious content. One of these links, https://ttraff.cc/pify?keyword=biotina+efectos+adversos+pdf, is identified as a malicious redirector. This suggests the document is part of a campaign to lure users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=biotina+efectos+adversos+pdf
    • http://files.truth2be.net/uploads/1/3/0/7/130738924/resiromora-kululaxorow-jubami-mobedolajetame.pdf
    • http://files.sunsationalsixthgraders.com/uploads/1/3/0/8/130874197/c9226.pdf
    • http://wovejiw.happyteachers.co.uk/uploads/1/3/1/3/131379246/nugabemitoluver.pdf
    • https://cdn.shopify.com/s/files/1/0437/0936/6427/files/58268398490.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/55807582604.pdf
    • https://cdn.shopify.com/s/files/1/0430/2589/1479/files/libro_examenes_cae.pdf
    • http://rizanave.jpetrovic.people.ua.edu/uploads/1/3/0/7/130738666/bibuzavipafeto-funarok-tejixatijukidij-dozuzutotoke.pdf
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/fusozimida.pdf
    • https://cdn.shopify.com/s/files/1/0439/1901/6104/files/nosidajodilupulukoku.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/rabizuvawena.pdf
    • https://cdn.shopify.com/s/files/1/0428/8380/9439/files/53261013702.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/69794430513.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/punctuation_worksheets_for_grade_3_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/pijositarudik.pdf
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/77183505508.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006835.bin
23cb893f3cb7c4e818097b7694fb859f2f1572afa6dba53cd5fba93b002d5289
pdf-font-stream PDF embedded font (sfnt) at offset 0x6835 5228 bytes
font_01_sfnt_off00007a1e.bin
94b85351bac946b9424eef50ef8b45a462a100bc3fdb18368ecc0c0a31f56d48
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1E 10892 bytes
font_02_sfnt_off00009dd3.bin
bfc441d837b7b3b6e145db50ef40ca26079b22b75b7d4883bc21c88ef510c1a9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD3 16092 bytes