Malicious PDF — malware analysis report

Static analysis result for SHA-256 a182811cbf3106e3…

MALICIOUS

PDF

43.2 KB Created: 2020-08-11 23:39:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5587aa2bdb1b00c999125ab318544703 SHA-1: 322b502e67f9ec8310955d10f617042e90861adc SHA-256: a182811cbf3106e376c5187895de0910c7e1894728e58ca48ef2270ef24c7ea8
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious link, https://ttraff.com/pify?keyword=cesare+pavese+poemas+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this malicious URL, suggesting the intent is to redirect the user to malicious infrastructure.

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=cesare+pavese+poemas+pdf
    • http://files.businesseducationmsde.com/uploads/1/3/1/4/131438150/350da43.pdf
    • http://files.zhou-jiang.com/uploads/1/3/2/6/132682585/tisaso_vasupep_pekitewabus.pdf
    • http://files.denaryin.com/uploads/1/3/0/9/130968972/migekixaruzikawud.pdf
    • http://files.myseattleblog.com/uploads/1/3/1/4/131407214/mefanu.pdf
    • http://files.greatlakesantiquesandartisans.com/uploads/1/3/0/9/130969499/raradu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/non_renewable_energy_sources.pdf
    • https://cdn.shopify.com/s/files/1/0431/6787/5221/files/vail_az_zip_codes.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/12332722632.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mozesuseb.pdf
    • https://cdn.shopify.com/s/files/1/0447/8559/8615/files/conduction_heat_transfer_poulikakos.pdf
    • https://cdn.shopify.com/s/files/1/0431/1157/9809/files/cardiology_medical_terminology.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/data_security_and_privacy_in_cloud_computing.pdf
    • https://cdn.shopify.com/s/files/1/0433/5697/9351/files/polymorphism_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3382/files/12978978469.pdf
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/78798968986.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/fazunejugunaropizetesetu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7737/6936/files/ice_ice_baby_instumental.pdf
    • https://cdn.shopify.com/s/files/1/0440/8524/8165/files/que_es_una_enfermedad_genetica.pdf
    • https://cdn.shopify.com/s/files/1/0437/4754/1146/files/field_manual_download.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_off00006c29.bin
1e4eacf4c27256fdf739f0d3ac1d636cce7c30cfee2351be725e2ecedacdb593
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C29 5120 bytes
font_01_sfnt_off00007d7d.bin
49f1f4ff85eb1903764f2a9c28e71d3621d19964bc92b94d2c81eecc3aa684ff
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D7D 10668 bytes