Malicious PDF — malware analysis report

Static analysis result for SHA-256 546cf7aff3ec388d…

MALICIOUS

PDF

58.1 KB Created: 2020-08-23 07:19:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa6f18d1b35e1250c173fe7283b3b09e SHA-1: 79261c23503578484b687be3d0d9e227cba65d97 SHA-256: 546cf7aff3ec388d4927ab204497b28c15416cdf10ed8e5b57968b74dd63cfd1
150 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 pointing to shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. The document body text, though heavily obfuscated, contains the string 'Bollywood movie hd print' and the malicious URL, suggesting a lure for pirated content. The ML classifier strongly flagged this PDF as malicious.

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.cc/pify?keyword=bollywood+movie++hd+print In PDF document text
    • http://files.aaquizbowl.org/uploads/1/3/1/1/131164488/dfa40a.pdfIn PDF document text
    • http://gaxoguju.kreativefutures.co.uk/uploads/1/3/0/8/130814328/3243305.pdfIn PDF document text
    • http://mesapu.tomsbait.com/uploads/1/3/1/4/131437987/monosemexava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3878/4158/files/zadaterifimubibodixejire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9879/0301/files/sixuvomub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/razuvopemelok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1918/1978/files/68463229597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6012/8931/files/intermittent_explosive_disorder_dsm_5_criteria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/temple_trust_deed_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1969/6288/files/acidos_y_bases_organicos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/29260203150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/zogosotonuxibajutafipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3673/5645/files/72020294677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/annual_report_of_a_company.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/biwaxef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5245/7369/files/lomiv.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091f9.bin
4f01f1edd782fe3a749ad620b9ffecd809317756d08304f0f5dd7a5b72948330		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91F9 5112 bytes
font_01_sfnt_off0000a357.bin
2f17f0d14cb35dd4a21da498d845a0b3cee95ed5dbc0110c776f3437c8880854		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA357 10144 bytes
font_02_sfnt_off0000c63e.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC63E 16164 bytes

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