Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e328feda3f5aee4…

MALICIOUS

PDF

41.4 KB Created: 2020-08-31 06:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae7b3db2b05874924bdefc57af94bdf9 SHA-1: 49f23eef3ce79f559cd2b9bc62fb3663f099c299 SHA-256: 7e328feda3f5aee450a8f66ab1d1a5f1ee9fa636a4fdceec1eb493fa5e029dc7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one prominently featuring a search query for "Overwatch voice changer download" and directing to a known malicious redirector. This suggests a phishing or scam attempt, likely using the document as an attachment in a spearphishing campaign. No scripts were extracted, limiting the analysis of further malicious behavior.

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/wix?keyword=overwatch+voice+changer+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/37414926287.pdf
    • https://cdn.shopify.com/s/files/1/0436/4114/3454/files/31065506412.pdf
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/70094782698.pdf
    • https://static.usrfiles.com/ugd/362633_254e65b5f7284c08aa088e1a4eb3a178.pdf
    • https://static.usrfiles.com/ugd/87fdc7_c70e117376b148d3bd28f86bf3842896.pdf
    • https://static.usrfiles.com/ugd/217d68_58880bfa105644a98770bfecdeca6750.pdf
    • https://static.usrfiles.com/ugd/18f527_71f730a98ba24bf58f3f05984eda7079.pdf
    • https://static.usrfiles.com/ugd/fac845_de60a2054a6c4943b8c14d5c26ebed49.pdf
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/shop_vac_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/6290/0374/files/kodak_easy_share_z712_is.pdf
    • https://cdn.shopify.com/s/files/1/0464/8327/5928/files/jim_beam_decanter_value_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/5814/2120/files/jovizubimuvofipesutuligub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.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_off000064c6.bin
0c58ccbc8531e774b076c35ce10070c3dd3632a68d5a742c6756662252b3aa9d
pdf-font-stream PDF embedded font (sfnt) at offset 0x64C6 5200 bytes
font_01_sfnt_off00007686.bin
64c1b11cba8a5bf2b0b4bba8fe0e08b00616f5a6bc8dc166785000e20760eb27
pdf-font-stream PDF embedded font (sfnt) at offset 0x7686 10084 bytes