Malicious PDF — malware analysis report

Static analysis result for SHA-256 500de1d6f5e03e12…

MALICIOUS

PDF

46.8 KB Created: 2020-08-20 06:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ebd28dbc40ce5476db6c8703b834d759 SHA-1: 7954a853abe6a747e4bff65b09d0cb1ba92809e1 SHA-256: 500de1d6f5e03e1226126151ed0b0c74d72692ef6d4f03095112c1a63662327d
154 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The embedded URL points to 'ttraff.com', which is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of a link farm further indicates a malicious intent to distribute or redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=super+car+racing+games++for+pc
    • http://files.mygabrielagarcia.com/uploads/1/3/2/7/132740260/xokopo.pdf
    • http://giretuzo.littlelambshdc.com/uploads/1/3/0/7/130775826/sasubobej-sadaxe-kofig-mibajazoluki.pdf
    • http://juwesux.mortgagesbygianni.com/uploads/1/3/0/7/130739430/ramozewobu_zepivegutijem_gevap_vekenevadomabaf.pdf
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/guwiwifedivida.pdf
    • https://cdn.shopify.com/s/files/1/0438/9565/2504/files/48476046995.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/xapakepi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/mesazepuwetisev.pdf
    • https://cdn.shopify.com/s/files/1/0434/6963/5734/files/wokid.pdf
    • https://cdn.shopify.com/s/files/1/0432/8970/6664/files/xuwaxorikokudazagoron.pdf
    • https://cdn.shopify.com/s/files/1/0439/4464/0667/files/julidazowofirugojegam.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jexisobipa.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/62330679950.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_off00007873.bin
10a43a40b9ff3ca20c17ae418ef0ede9500e9d167fa8767680f5f3264ab5684c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7873 5408 bytes
font_01_sfnt_off00008ac5.bin
35eec6c867577a1eb33c2d1dae5f0cb8480416909fda8388901e5e7ce1496924
pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC5 10392 bytes