Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0ad52f711127f97…

MALICIOUS

PDF

41.6 KB Created: 2020-08-04 22:00:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1417f9d1de019c50932bbe4e339aa098 SHA-1: 447e86994243993f91db52408f36609fa2f81b02 SHA-256: e0ad52f711127f97de685ffc0d3f332b629ff20a6bfde23dd5ab76434f0ab190
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The document body, though corrupted, contains text suggesting it is a 'Metallica lyrics pdf' and includes the malicious redirector URL. This indicates a likely attempt to redirect users to malicious content under the guise of providing lyrics.

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.cc/pify?keyword=one+metallica+lyrics+pdf
    • http://files.audienceseurope.com/uploads/1/3/0/7/130776142/sigusupetoromovomo.pdf
    • http://files.guitarsounds.com/uploads/1/3/2/3/132303359/6609263.pdf
    • http://files.waysidechristianmission.org/uploads/1/3/1/3/131380728/ranemepumuxaxabuk.pdf
    • http://files.npnbuyer.net/uploads/1/3/1/3/131379552/vevivarivu-morufokolaroji.pdf
    • http://files.delbus.com.au/uploads/1/3/0/8/130874299/9fd4afd8a4fbc.pdf
    • https://cdn.shopify.com/s/files/1/0438/3339/3309/files/fisunimi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/aditya_birla_health_insurance_hospital_list.pdf
    • https://cdn.shopify.com/s/files/1/0431/4021/9037/files/php_convert_array_to_string.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.pdf
    • https://cdn.shopify.com/s/files/1/0428/9911/2099/files/89748550157.pdf
    • https://cdn.shopify.com/s/files/1/0444/2878/7879/files/addition_word_problems_for_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/59394028985.pdf
    • https://cdn.shopify.com/s/files/1/0437/1959/0040/files/neguwokiwakoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/73393541591.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70282461387.pdf
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/56793904431.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_off000063a2.bin
7e589405e97f319da12c7a4547f72c67324600d51981d801392d9f0902d507bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A2 5432 bytes
font_01_sfnt_off00007606.bin
0e44ac4a649ea841e93a2e908bac95b0d6d466dcf4df5da40c718dd997a9a46b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7606 10456 bytes