Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee16686b476c6806…

MALICIOUS

PDF

42.2 KB Created: 2020-08-08 21:26:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc7501b86596fbe0aab08dae7914c109 SHA-1: f8fdc039ec4ba00e1342b732f04d9f7eda1156be SHA-256: ee16686b476c68067e0786d6be1ea699863905b1867192b12968947bbfb0d945
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that are flagged as malicious redirectors, specifically pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to "lecture notes" and the malicious URL, suggesting a lure to entice users to click the link. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine visibility for malicious content. No scripts were extracted from this sample.

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.com/pify?keyword=lecture+notes+on+genetic+algorithm+pdf
    • http://jedik.friends.kanemiller.com/uploads/1/3/0/8/130874359/2903441.pdf
    • http://files.braverthanthewaves.com/uploads/1/3/1/4/131453807/5359755.pdf
    • http://files.noodleshopdesign.com/uploads/1/3/1/4/131406258/jaxifu-misulimoke.pdf
    • http://pepaxu.mortoncc.org/uploads/1/3/1/1/131163635/pofodolab_girenakipuwiv_bododoxofo.pdf
    • http://files.stjohnshemet.org/uploads/1/3/1/4/131455543/4501341.pdf
    • https://cdn.shopify.com/s/files/1/0433/8935/4142/files/vogireje.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/71368972136.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/python_programming_for_beginners_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/nokekurufapixosusunudogex.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6095/files/79964783226.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/85229328861.pdf
    • https://cdn.shopify.com/s/files/1/0431/8163/7794/files/lurififimanevatani.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/nutebon.pdf
    • https://cdn.shopify.com/s/files/1/0437/0831/7850/files/advantages_and_disadvantages_of_new_technology.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/jesasadezonakawowuguzerib.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/xebalegitadin.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/76617304593.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/xafelatelexudaxejidapovom.pdf
    • https://cdn.shopify.com/s/files/1/0432/2086/1092/files/blueprint_decoded.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_off0000627a.bin
38c4724ec85af7e6f17004b04fe9c9b8cf039981dbfe5db8b0798a549ad8ed88
pdf-font-stream PDF embedded font (sfnt) at offset 0x627A 5508 bytes
font_01_sfnt_off00007514.bin
f6e92e33f3a4364979378dbe05c46ff3f9e6f4f9e4a904067d8ec6dc54ad1c98
pdf-font-stream PDF embedded font (sfnt) at offset 0x7514 11708 bytes