Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfbd3a79fcf7faf…

MALICIOUS

PDF

47.4 KB Created: 2020-08-20 11:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab9c741e04a27eadf4d3da8d70cd2e80 SHA-1: f94a1025cbdbe8d59a1b13fae4f7d38bc390d86e SHA-256: 2cfbd3a79fcf7faf8522d5a17197475803e00efee8155e300aa8fc570f40d769
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.ru. The presence of a 'download' button lure and numerous PDF links suggests a link farm or phishing attempt designed to drive traffic to malicious infrastructure. No scripts were extracted, limiting the analysis of direct payload delivery.

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.ru/pify?keyword=acrokeratosis+verruciformis+meaning
    • http://fekevidu.northeasternwomensrugby.com/uploads/1/3/1/6/131636612/jiralulidazasetoji.pdf
    • http://files.hoosierhideaway.com/uploads/1/3/0/9/130969358/getetufifusij.pdf
    • http://buloki.lgmcferren.com/uploads/1/3/1/3/131383629/c851d78ae4c857.pdf
    • http://juvubi.athomeplay.org/uploads/1/3/1/3/131384635/maxitu-zafazaz-kokimi.pdf
    • http://files.leonardoarriola.com/uploads/1/3/0/7/130738568/ce0f36ee5.pdf
    • https://cdn.shopify.com/s/files/1/0437/4354/3447/files/bodybuilders_training_videos.pdf
    • https://cdn.shopify.com/s/files/1/0433/9780/8279/files/archicad_21_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/1335/8247/files/abdomen_agudo_scielo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/pipulipovokox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdf
    • https://cdn.shopify.com/s/files/1/0444/2423/3126/files/tell_me_about_yourself_answer_for_experienced_software_engineer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9590150980.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2894/files/the_complete_book_of_demonolatry_magic.pdf
    • https://cdn.shopify.com/s/files/1/0438/6609/5781/files/38494162835.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/47396697307.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/sitewaxutivosobakepimu.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_off00006cf5.bin
2e83a45912b4f68d9127610fb6113f86a00912ce8b1c13949dc35e415eaef552
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF5 5164 bytes
font_01_sfnt_off00007e72.bin
f8407fc428b556904418e2038c1e3a02f6e778d15a5cf77be185b6907566ecf3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E72 10536 bytes
font_02_sfnt_off0000a27a.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA27A 4324 bytes