Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8c47a99477e7d74…

MALICIOUS

PDF

43.6 KB Created: 2020-08-07 09:47:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f00757ec6e37a930086dcbd4065d966 SHA-1: 7fe52daa9b9844785fe1a516eedc1a9b0ec6c3f4 SHA-256: f8c47a99477e7d74b7021eac8741d2b28425fe16e0117c2382c463abe3e18f37
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=tableau+d+amortissement+acc%25C3%25A9l%25C3%25A9r%25C3%25A9+pdf, which is known to lead to malicious infrastructure. The document body, though partially corrupted, suggests a lure related to financial amortization schedules, likely to entice users to click the embedded links. The presence of numerous benign-looking Shopify links is a common tactic to disguise the malicious intent.

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.ru/pify?keyword=tableau+d+amortissement+acc%25C3%25A9l%25C3%25A9r%25C3%25A9+pdf
    • http://files.maryanndipietro.com/uploads/1/3/2/8/132814906/4055776.pdf
    • http://files.swampscottfootball.com/uploads/1/3/1/6/131606431/xasewubisopesetonite.pdf
    • http://files.attercliffepharmacydirect.com/uploads/1/3/0/7/130775232/defuwo.pdf
    • http://files.colindecio.com/uploads/1/3/2/7/132740435/85216070.pdf
    • http://files.shipanna.com/uploads/1/3/1/4/131437044/7858462.pdf
    • https://cdn.shopify.com/s/files/1/0438/0357/4434/files/bombay_high_court_calendar_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5767/files/raxagowakibedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/stone_gate_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/86107566551.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0499/files/assertiveness_skills.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5592/files/dijuvezuvosepujadowele.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8806/files/xodepef.pdf
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/ielts_writing_task_1_and_2_samples.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.pdf
    • https://cdn.shopify.com/s/files/1/0430/7602/6522/files/66005254088.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/kuluruzadusikepabosaxu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1087/3765/files/29170210814.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/new_holland_service_manual.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_off00006908.bin
bff8ce1130ae9df28bd7b15955aad792f1c35def91d51ac799df54366f2c9ef2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6908 5532 bytes
font_01_sfnt_off00007b72.bin
17f8059210f77da4db3592d4297a24ad6d692ada2c3261192bda10a2e49e3d4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B72 11392 bytes