Malicious PDF — malware analysis report

Static analysis result for SHA-256 c77ea0c392c74aec…

MALICIOUS

PDF

57.1 KB Created: 2020-08-13 23:49:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3f2a88ea7b2d1f21f7c60a7c30df7e3 SHA-1: 3a6906f0620a7842bb2851e1d45cb08b8bad99e0 SHA-256: c77ea0c392c74aec2ba24ba7e7e096475b1a0d33ed121bfe32cf1ba09e317207
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm abuse. One of these links, https://ttraff.ru/pify?keyword=babbu+maan+hashar+song, is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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.ru/pify?keyword=babbu+maan+hashar+song
    • http://files.islascholarships.com/uploads/1/3/1/3/131383493/zozumujigono.pdf
    • http://files.broadwaypinups.com/uploads/1/3/0/9/130969699/2e884f.pdf
    • http://files.newkindlife.com/uploads/1/3/1/3/131384113/4571592.pdf
    • http://files.gametimeranch.com/uploads/1/3/0/8/130874124/nafonaja_zimenuso_zivijojufar_togemexek.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8209/files/cysa_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/john_deere_manuals_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/53133158014.pdf
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/mosijidu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/tilinimakukirezirenizi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/belly_breathing_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74098669839.pdf
    • https://cdn.shopify.com/s/files/1/0431/8271/9127/files/92835343690.pdf
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/rokowat.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/jilubotot.pdf
    • https://cdn.shopify.com/s/files/1/0432/8328/4136/files/mavunebaviwokavamijiwonat.pdf
    • https://cdn.shopify.com/s/files/1/0434/4925/4041/files/risuwil.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e97.bin
fd7ca904a086d7e4d4549ff606d429cf8a246d475548939133b0259e316ca2cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E97 2996 bytes
font_01_sfnt_off0000895a.bin
e8b424f2673dc54563f6146d9dbe6a5662b74bcf3043365ff9664d485243dbd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x895A 4892 bytes
font_02_sfnt_off000099aa.bin
239193093639247cd46076e18813daa560f75db44c0d628758b376d6f08079d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99AA 15396 bytes
font_03_sfnt_off0000c927.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC927 4324 bytes

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