Malicious PDF — malware analysis report

Static analysis result for SHA-256 90e6b3f4e3dfbe36…

MALICIOUS

PDF

47.2 KB Created: 2020-08-23 12:14:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9855c71bb46ba9230dcffbbe0e6a36be SHA-1: bdf648c898fa4fe87e87ebadeb57c8e12f7368d1 SHA-256: 90e6b3f4e3dfbe36ed09f85c59b02a1bb5365b7e2efe3613ad37427101911415
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, with one specifically pointing to a known malicious redirector. The document body is heavily obfuscated and contains a reconstructed URL that matches the malicious redirector. This suggests the PDF is designed to lure users to malicious websites, likely for further exploitation or phishing.

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=ch.+qos.+logback.+classic.+loggercontext+jar
    • http://files.capitalandcountryrisk.com/uploads/1/3/2/7/132712057/mijax.pdf
    • http://files.fourpawsdoors.co.uk/uploads/1/3/0/8/130874431/bejegasasokome.pdf
    • http://jobuku.canaanchristianministries.co.uk/uploads/1/3/1/3/131379578/efa5d66cb4ca14b.pdf
    • http://files.veinsnz.com/uploads/1/3/0/7/130740323/50a8bf3e.pdf
    • http://files.mrsobriensdistancelearningliteracylink.com/uploads/1/3/1/8/131872079/zamapexezikikaviwegi.pdf
    • https://cdn.shopify.com/s/files/1/0447/2376/5402/files/agrarian_reform_law_by_ungos.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/chinese_ear_acupuncture_chart.pdf
    • https://cdn.shopify.com/s/files/1/0428/7456/8860/files/geziwivutabug.pdf
    • https://cdn.shopify.com/s/files/1/0431/6148/5471/files/33097535071.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/36740814300.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/37525981960.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/25083168791.pdf
    • https://cdn.shopify.com/s/files/1/0440/6706/1910/files/mignonne_allons_voir_si_la_rose.pdf
    • https://cdn.shopify.com/s/files/1/0428/5726/7359/files/68179251289.pdf
    • https://cdn.shopify.com/s/files/1/0439/6836/4702/files/wexerodefinuda.pdf
    • https://cdn.shopify.com/s/files/1/0431/5326/0701/files/28829981767.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/oxford_english_speaking_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0246/1351/files/how_to_redeem_a_steam_code.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1563/files/15125401232.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/
    • https://cdn.shopify.com/s/files/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006983.bin
f357726014454889783f19c9a51d27ce92d9e930e7fd9f248d259783310ef7b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6983 3276 bytes
font_01_sfnt_off0000753d.bin
e8a80d0f769ac8efad6804b67d21f65f1360a112e0ca9bd2da50278947ec4d5e
pdf-font-stream PDF embedded font (sfnt) at offset 0x753D 5472 bytes
font_02_sfnt_off000087dd.bin
e8cd2cd58ac9c3685fa4345734ec853ac757e106f6af27b4d407c40323b6cd35
pdf-font-stream PDF embedded font (sfnt) at offset 0x87DD 12100 bytes