Malicious PDF — malware analysis report

Static analysis result for SHA-256 0194ef8a50a816dd…

MALICIOUS

PDF

36.1 KB Created: 2020-08-18 13:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84a31ceea03873b29c6832aa2729a361 SHA-1: c361b50d9765d75f7f081358e5893ff641d4d355 SHA-256: 0194ef8a50a816ddcee5a4d0fb1e8bf4250e48c57b012f4b60cc532edde7f6f8
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though partially corrupted, contains text suggesting it is a 'Char broil classic grill owner's manual' and includes the malicious URL. This indicates a likely phishing or malware distribution attempt using a lure.

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=char+broil+classic+grill+owner%2527+s+manual
    • http://files.shineforfiveboutique.net/uploads/1/3/1/4/131411199/bigikeranuwezis_zuzojowem_bigixadipase.pdf
    • http://natager.thedojoparamus.com/uploads/1/3/0/9/130969204/7199378.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jegatakufiritejat.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/8793860981.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/schaum_series_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/4501/9035/files/nativokafelamafupugawem.pdf
    • https://cdn.shopify.com/s/files/1/0429/5357/2515/files/antecedentes_historicos_de_la_fisica.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/52760927546.pdf
    • https://cdn.shopify.com/s/files/1/0434/7697/5768/files/sony_18650_vtc6.pdf
    • https://cdn.shopify.com/s/files/1/0432/5959/2859/files/jededexovuporarim.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e5f.bin
0c0d3c80fe4e4e9cb6db54ebbfb6e5aa8ec0de77267cd766e968750a6c3f58c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E5F 5384 bytes
font_01_sfnt_off0000609d.bin
536a16f7c0585cb57953f38c7483e3b09ecc723cea46498e10210a27c136c5f4
pdf-font-stream PDF embedded font (sfnt) at offset 0x609D 10524 bytes