Malicious PDF — malware analysis report

Static analysis result for SHA-256 10d14081247c3c42…

MALICIOUS

PDF

58.7 KB Created: 2020-07-29 15:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bea73ed5e5f070a9f50f19dc329a24f6 SHA-1: 8472b4384cad40ec78107f587448291134930ac0 SHA-256: 10d14081247c3c4282a24f3a7710305bf78270c7806be9a8f72159b30a1333d9
154 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to financial documents. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination and potentially distribute further malicious content.

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=ap+finance+budget+2020+20+pdf
    • http://files.ct-asta.org/uploads/1/3/1/3/131384797/1e73b7a6dd06a.pdf
    • http://files.yashbangera.com/uploads/1/3/0/7/130738625/83486b04a35.pdf
    • http://files.sunnydaysevents.com/uploads/1/3/1/4/131437978/4348315.pdf
    • http://files.hallvardlillehammer.com/uploads/1/3/2/7/132710795/4119001.pdf
    • http://files.chezbudgourmetseasonings.com/uploads/1/3/2/3/132303269/3305881.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/77652589434.pdf
    • https://cdn.shopify.com/s/files/1/0427/6443/5612/files/12084674982.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/80899899140.pdf
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/gutugebupetamovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3504/9640/files/92387877618.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/18774870670.pdf
    • https://cdn.shopify.com/s/files/1/0434/0541/0471/files/67096204056.pdf
    • https://cdn.shopify.com/s/files/1/0434/7097/9238/files/78352281746.pdf
    • https://cdn.shopify.com/s/files/1/0435/4736/1439/files/vomovov.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/mumupisaseruvisuwa.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_off00009e99.bin
a602f92dc0015f847d612d2178af559e40fa6e3fc745336d5603008831bcf153
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E99 5192 bytes
font_01_sfnt_off0000b04a.bin
bd9d4d994455d437a9e565e250c241757d4e48ac4f34120b67f9b17fca41cc7f
pdf-font-stream PDF embedded font (sfnt) at offset 0xB04A 14640 bytes