Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e13b0e057aff08…

MALICIOUS

PDF

36.2 KB Created: 2020-07-31 17:51:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: abcac7c3de59ed2388ddfb22aeaa4a25 SHA-1: 67ecb2a7f986d382022570d2c4ac0054ae7589af SHA-256: f5e13b0e057aff08ccf952ecba91297a687273db508bd104df4ad42e1b8e72c4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external resources. One of these links, https://ttraff.com/pify?keyword=lowes+canandaigua+ny, is identified as a malicious redirector. The document body itself is heavily obfuscated but contains references to URLs, suggesting a lure to external malicious content. The ML classifier strongly flagged this PDF as malicious.

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=lowes+canandaigua+ny In PDF document text
    • http://files.kdhodges.com/uploads/1/3/2/7/132740321/5360778.pdfIn PDF document text
    • http://files.moonpoppyinterpreting.com/uploads/1/3/0/9/130969357/zejuloborabus.pdfIn PDF document text
    • http://files.cobramwillows.com/uploads/1/3/2/8/132814219/wolodo-nazatotu-nezufezofaxi-kapuredatulefav.pdfIn PDF document text
    • http://files.paulettesart.com/uploads/1/3/1/3/131398406/c5eae3.pdfIn PDF document text
    • http://files.portfairyjazz.com.au/uploads/1/3/2/6/132682615/mejutixafobivux_nivoteseloguze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5053/2001/files/49556146475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/dapebetusofulilovob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2231/7728/files/zelonajitotuwubonodudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3666/3208/files/95537100058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/20945588524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82973104521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7299/2918/files/feloluriwodus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/tabugakupewosuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6412/3814/files/29860977559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8784/6806/files/dixaxaguburek.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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E9B 5112 bytes
SHA-256: 1d237a7741b4c37c4f4bc8f82651a959702a2d85ef7045fb0761138066a93b65
font_01_sfnt_off00006035.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6035 10596 bytes
SHA-256: c3c8a1a3428db140545403acf902500f2ce96fa2e1815ed4958573e74da400ce

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