Malicious PDF — malware analysis report

Static analysis result for SHA-256 828f17f2d71b65fe…

MALICIOUS

PDF

41.9 KB Created: 2020-08-24 06:55:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b628dc55d6f635d49331793922c7c064 SHA-1: 2c6f1e5ece8b6caf2867c6d458e69d411fe5224f SHA-256: 828f17f2d71b65fe78b2eb4ceb0d3c7dd6814be690a4773068ec6b2830d73166
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=android+apps+that+give+you+money'. This indicates the document's primary purpose is to redirect the user to a potentially harmful site. The presence of a large number of external PDF links, many hosted on shopify.com, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted, but the embedded URL and the ML classifier strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=android+apps+that+give+you+money
    • http://files.dyw-edinmideast.com/uploads/1/3/1/3/131379615/wesuruwiwogonapop.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4936/files/usa_time_zone_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/gifikitoxotubezikore.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/17749604492.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76423385748.pdf
    • https://cdn.shopify.com/s/files/1/0447/0764/3545/files/vasculitis_classification.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/bikejojujikibaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20424522606.pdf
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/86514640368.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/mujobuviriwesizafasezow.pdf
    • https://cdn.shopify.com/s/files/1/0430/7704/2337/files/21656928194.pdf
    • https://cdn.shopify.com/s/files/1/0463/9588/3675/files/inorganic_synthesis_and_chemical_nomenclature_report.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_off00006472.bin
f85ce75d466a7e8e3ea3f06b748ddde5efc49b9c87a98e117727ce924261fe2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6472 5492 bytes
font_01_sfnt_off000076fe.bin
bfd339f4e0d5cceb0d4d5a1a41e23f6e2f1150ea367eeb20340c39f4428c4472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76FE 10440 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.