Malicious PDF — malware analysis report

Static analysis result for SHA-256 415f6259a6bab1eb…

MALICIOUS

PDF

41.4 KB Created: 2020-08-06 04:48:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b59c80a825681171709926c93f48db3 SHA-1: 1fb310797940d7ae85065dcf19ec262905fbeebb SHA-256: 415f6259a6bab1eb2af3fe1bc7114e79560e900452c8b83fcd2b92688d4c2a16
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific malicious redirector URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the malicious URL and references to a 'railway reservation application form', suggesting a social engineering lure. The PDF_SEO_LINK_FARM heuristic indicates the document is designed to host numerous external links, likely for SEO poisoning or to distribute further malicious content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=railway+reservation+application+form+pdf
    • http://files.blossomparkaz.com/uploads/1/3/0/9/130969352/mukodorapojibun-xumolijimasaka.pdf
    • http://files.artistginasouthgate.com/uploads/1/3/0/7/130739715/98d1431e9ca.pdf
    • http://files.406cavoodle.com/uploads/1/3/2/8/132815807/jetopemesobuteb_zelavobomen_fexawat_kizizuni.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/14181123910.pdf
    • https://cdn.shopify.com/s/files/1/0434/3670/3900/files/p90x_nutrition.pdf
    • https://cdn.shopify.com/s/files/1/0433/9639/9265/files/16675549461.pdf
    • https://cdn.shopify.com/s/files/1/0433/8761/7447/files/maboribobawuzerojideg.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/womaxomemezadevavufulodur.pdf
    • https://cdn.shopify.com/s/files/1/0429/2883/2675/files/erorterung_beispiel_klasse_8.pdf
    • https://cdn.shopify.com/s/files/1/0439/1128/2840/files/sagawobidad.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6519/files/wolalom.pdf
    • https://cdn.shopify.com/s/files/1/0435/4405/1864/files/xugadupowaxudufet.pdf
    • https://cdn.shopify.com/s/files/1/0429/2175/4787/files/tawagipemine.pdf
    • https://cdn.shopify.com/s/files/1/0432/1506/1153/files/neredumezoko.pdf
    • https://cdn.shopify.com/s/files/1/0434/0793/3603/files/class_11_biology_chapter_2_biological_classification_notes.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_off0000630d.bin
a44bcfb004a517512e8394b442216e13019e244f26c97ddecd97ca7a63a6ec7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x630D 5564 bytes
font_01_sfnt_off00007606.bin
48936ef2fc6480f381e68bdea8d52359e5464ea8308a68413273cc8de93fdccd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7606 10060 bytes