Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b030e78e182249…

MALICIOUS

PDF

45.1 KB Created: 2020-08-09 08:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f6a80e93a730e332ce4421ec4c9fb2f SHA-1: a4a0ebdee87827fbf8639a77ad069f7f9d30db19 SHA-256: e2b030e78e182249326e06ade054cabc9f43c21474f195bfbc7ff6cdc098e509
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for phishing or redirecting users to malicious sites. One of the embedded URLs, 'https://ttraff.com/pify?keyword=alimentos+con+carbohidratos+simples+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of a large number of links suggests a link farm or a broad phishing attempt.

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=alimentos+con+carbohidratos+simples+pdf
    • http://files.williamabur.com/uploads/1/3/0/7/130775728/pobaju.pdf
    • http://files.haldre.org/uploads/1/3/1/3/131380440/fdefad3bfead2.pdf
    • http://files.jenniferdowneywrites.com/uploads/1/3/1/4/131437702/lerilukis.pdf
    • https://cdn.shopify.com/s/files/1/0439/9883/8942/files/dakovisunibaviwegaza.pdf
    • https://cdn.shopify.com/s/files/1/0448/2210/2178/files/grammar_games_cambridge.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/poliwubirevamusijapadode.pdf
    • https://cdn.shopify.com/s/files/1/0430/9316/4181/files/14959711291.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/wuzuvokakadeborajirivex.pdf
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/11040743333.pdf
    • https://cdn.shopify.com/s/files/1/0432/0968/7208/files/wuzudokewove.pdf
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/elementary_differential_equations_10th_edition_boyce.pdf
    • https://cdn.shopify.com/s/files/1/0449/6785/4248/files/referencias_bibliograficas_apa_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/three_kingdoms_tv_series.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/83656928994.pdf
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/69940297645.pdf
    • https://cdn.shopify.com/s/files/1/0454/7529/9478/files/causes_of_hypertension.pdf
    • https://cdn.shopify.com/s/files/1/0432/2462/9405/files/50443745181.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_off00006dfd.bin
bc4d5a5961f4c96cee3021afeb878ece20cf84a5078b569706cc2cd78f4fd8d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFD 5524 bytes
font_01_sfnt_off00008093.bin
1b2c34c9bc17f00b1474c2738f5d3bb35f9ebe2b76a03ae480267b1ac6aac26a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8093 11320 bytes