Malicious PDF — malware analysis report

Static analysis result for SHA-256 018caee2961d061a…

MALICIOUS

PDF

42.6 KB Created: 2020-09-02 01:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1c689bbe30022ece2f857842af483c6 SHA-1: 7712454ecf83b3d5e464224b38432643e35c7979 SHA-256: 018caee2961d061a42f752400ac0f7ed54e988df36aa7f91e1bea82f90221f7a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a deliberate attempt to direct users to a malicious site. The ML classifier also strongly indicated maliciousness.

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/wix?keyword=sunshine+adagio+in+d+minor+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6249/2310/files/45258867382.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/11468021788.pdf
    • https://cdn.shopify.com/s/files/1/0432/8076/0990/files/67876025133.pdf
    • https://cdn.shopify.com/s/files/1/0435/3346/7807/files/formula_of_mean_median_and_mode_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/fumitulugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/94267293602.pdf
    • https://cdn.shopify.com/s/files/1/0434/1137/4234/files/jitipa.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6306/files/platform_as_a_service_market_trends.pdf
    • https://cdn.shopify.com/s/files/1/0432/4160/3239/files/canopus_edius_effect_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/8267476981.pdf
    • https://cdn.shopify.com/s/files/1/0434/0406/6967/files/xasadetuzokuwipes.pdf
    • https://cdn.shopify.com/s/files/1/0450/6199/6694/files/definition_of_auditing.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6048/files/94998864831.pdf
    • https://cdn.shopify.com/s/files/1/0427/9356/6364/files/72918687959.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dejozetopugewafapo.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_off000068bc.bin
9649ba4be1c9dde236fb7bf93212ca048ce378324239ccf45d35a7bb08e720a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x68BC 5524 bytes
font_01_sfnt_off00007b57.bin
77ed4b2dbd6977e5a51f24f568190e359e9cc8c35f19fb5c144e6811d4bc3996
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B57 9980 bytes