Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2e22ebb5306f8e6…

MALICIOUS

PDF

92.1 KB Created: 2020-08-12 10:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ec3c7a7785522ab9bc57f3e6ab02899 SHA-1: 848f56513ed58c861b027823a2372958c58b9724 SHA-256: c2e22ebb5306f8e62730c6313cda4ad675d6e05da04fc16ebf702abf8e0ab4bb
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains heuristics indicating it's a malicious redirector and part of a link farm, specifically luring users with payment-related language. The embedded URL 'https://ttraff.com/pify?keyword=accounting+basics+uk+pdf' is a critical indicator of malicious redirection. The document body, though heavily obfuscated, contains this URL, reinforcing the lure. The presence of numerous external PDF links suggests a campaign to distribute malicious content.

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=accounting+basics+uk+pdf
    • http://ganaxeka.bradyscustomwoodcraft.com/uploads/1/3/2/3/132302921/b120260eb79b28.pdf
    • http://gegaw.cristinavannel.com/uploads/1/3/0/8/130814681/bakitajilanafime.pdf
    • http://files.medicarespecialist.com/uploads/1/3/0/7/130775033/jugefe-suvigizumekarur-remabogevowi-bilovuse.pdf
    • http://files.centralwiballoons.com/uploads/1/3/1/6/131606789/gevigewakivunobel.pdf
    • http://files.primocelloceramics.com/uploads/1/3/0/8/130873822/nikenekipup.pdf
    • https://cdn.shopify.com/s/files/1/0433/2191/7598/files/97596644219.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3448/files/deloretotujufubuwo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1220/9315/files/git_pull_master_into_branch.pdf
    • https://cdn.shopify.com/s/files/1/0432/1938/6526/files/1100_basic_english_phrases_for_conversation.pdf
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/17648098932.pdf
    • https://cdn.shopify.com/s/files/1/0433/9620/2661/files/alginac_bula_anvisa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/award_certificate.pdf
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/bacilos_gram_negativos.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/96237901987.pdf
    • https://cdn.shopify.com/s/files/1/0438/7376/3496/files/dynamics_of_machines_by_vijayaraghavan.pdf
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/janome_new_home_sewing_machine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/gewekuzadolubiv.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_off00012c22.bin
e02c29382bbe16a840d0a7f3fbe829b656c00e6a30199e48f83038ee2ce7e4ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C22 5388 bytes
font_01_sfnt_off00013e8b.bin
9ec5982250278112f20c1b5b45c01b2da3d7602ca84a4396ed5fee50ae19ed21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13E8B 10772 bytes

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