Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f3aea78bc1a4b5…

MALICIOUS

PDF

41.9 KB Created: 2020-08-09 20:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f312fa40d51d314f2aa7be5f9bf95b5 SHA-1: d3915d6a360b5e609b46c16ef880555d6b524ace SHA-256: e2f3aea78bc1a4b55f2aebcdc6fbbf526cba240ab2d4061f167fad7c35570b8d
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 directs to a known malicious redirector at 'ttraff.com'. This suggests a phishing or scam attempt where the user is enticed to click a link presented as a PDF, leading them to malicious infrastructure. The ML classifier also 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.com/pify?keyword=attitude+meaning+pdf
    • http://xanezenix.audreyartography.com/uploads/1/3/1/4/131453109/2629330.pdf
    • http://files.expertpromotions.org/uploads/1/3/1/4/131406749/namevuzeduliz_xenowogulijovop_gaxupeb_fedoterozado.pdf
    • http://files.wowpac.org/uploads/1/3/0/8/130813887/22020d5b5ffc8.pdf
    • http://widekame.playhousewestartsfoundation.org/uploads/1/3/1/6/131606875/nefalebu.pdf
    • http://files.gtc-elite.org/uploads/1/3/2/6/132682570/netefikuvuboz_fifajog_jubakafa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/28535635381.pdf
    • https://cdn.shopify.com/s/files/1/0428/4419/2935/files/40100912683.pdf
    • https://cdn.shopify.com/s/files/1/0435/5381/6728/files/xadotuxadununi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9807/0426/files/army_da_form_638.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/mixis.pdf
    • https://cdn.shopify.com/s/files/1/0433/2313/0009/files/monoprice_graphic_drawing_tablet.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/tefawujalirusegum.pdf
    • https://cdn.shopify.com/s/files/1/0433/9050/1020/files/pakajadotilenujapolir.pdf
    • https://cdn.shopify.com/s/files/1/0432/9914/3838/files/dexudabelevigudazugigu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/austronesian_migration.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/bobubisanotisiwo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7349/4430/files/noxixazepa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/birth_by_sleep_abilities_guide.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_off00006572.bin
57ae732238036d1f5e45972af1e65eac74c84544e53487da6c072453579f5f29
pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 5044 bytes
font_01_sfnt_off00007694.bin
9147ed7cca7e2826d5068303b7283e1496dab9f457e6cfb59f0a7039973ce60f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7694 10692 bytes