Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace5bff04438a882…

MALICIOUS

PDF

50.1 KB Created: 2020-08-10 03:37:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 507599577f0a780d4df4cc055e1c2364 SHA-1: 644aaa6fab09098507144468384fe99ad00c5084 SHA-256: ace5bff04438a8821535d432989a9c6c29bc6090f97bbfb5bf11dd2f416676eb
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK. The primary redirector URL is https://ttraff.com/pify?keyword=cardiomegalia+radiografia+pdf, which is flagged as malicious. The document body, though heavily garbled, contains references to the redirector URL and other benign-looking PDF links hosted on Shopify, suggesting a lure to disguise the malicious intent.

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=cardiomegalia+radiografia+pdf
    • http://files.glamourcosmeticsofficial.com/uploads/1/3/2/7/132740756/sitagewokodibesip.pdf
    • http://xesax.kneewalkersusa.com/uploads/1/3/0/7/130740596/minixaxixup.pdf
    • http://files.martinhartfilms.com/uploads/1/3/1/6/131636689/9521329.pdf
    • http://files.theflorecercasitasmx.com/uploads/1/3/0/7/130775588/2d35482f527.pdf
    • http://files.red-lotus-consulting.com/uploads/1/3/2/3/132303019/9465237.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1450/files/tibis.pdf
    • https://cdn.shopify.com/s/files/1/0435/9438/3522/files/acca_f1_notes_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/fonarakalubu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2478/4292/files/69241231106.pdf
    • https://cdn.shopify.com/s/files/1/0439/5512/6430/files/la_vida_es_sueo_pedro_calderon_de_la_barca.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puwojadudabub.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/46331669043.pdf
    • https://cdn.shopify.com/s/files/1/0434/7386/2808/files/71574783612.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/17052669022.pdf
    • https://cdn.shopify.com/s/files/1/0429/5373/6351/files/vupabowetarajalabaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/9670/2104/files/nirelikilej.pdf
    • https://cdn.shopify.com/s/files/1/0434/7818/8198/files/95193884075.pdf
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/tozamifa.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_off00007aad.bin
d3f2229cb9a3e3396a2365ba7e3da7684f0738bc105b340f5620c46b185565b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAD 4808 bytes
font_01_sfnt_off00008b06.bin
06788949fbc907683fdffc68b995746aa17f87962a5242d645041662a19af37f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B06 9916 bytes
font_02_sfnt_off0000aca9.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xACA9 4324 bytes