Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae2b28aa66469c8…

MALICIOUS

PDF

36.6 KB Created: 2020-08-01 16:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 030b9ff22d62f5b6f506dd1e981f1ef7 SHA-1: 8827c6e5eaa46cd3510b3325a873afccfcb32c84 SHA-256: eae2b28aa66469c8463a856c009ada6c462edd42e99cbebd98970fca83b3a0ae
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains numerous links, including one to a redirector URL that is flagged as malicious. The document body, though heavily obfuscated, contains the string 'https://ttraff.com/pify?keyword=fundamentals+of+financial+management+14th+edition+pdf', indicating a lure to a potentially malicious site. The presence of a large number of external PDF links suggests a link farm used for SEO poisoning or traffic redirection.

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=fundamentals+of+financial+management+14th+edition+pdf
    • http://files.brooksidestables.com/uploads/1/3/0/7/130776655/zakeb-juterajobidix-vatebugabetila-tovudazep.pdf
    • http://files.prospectdems.org/uploads/1/3/0/8/130815093/xenabusepovunatub.pdf
    • http://files.nurseryrhymeofamadman.com/uploads/1/3/2/6/132682640/tubosutafixid-sefupo.pdf
    • http://files.kickplex.co.uk/uploads/1/3/1/1/131164355/5606755.pdf
    • http://files.thefishchurch.com/uploads/1/3/1/3/131398145/d638867a.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/demukoribita.pdf
    • https://cdn.shopify.com/s/files/1/0433/6828/4319/files/35941833205.pdf
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/zaliludi.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/37349163442.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/vafajerenuxexopusin.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/pezuzelowi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7086/5052/files/lugaladamukuzev.pdf
    • https://cdn.shopify.com/s/files/1/0433/7070/9150/files/rexedude.pdf
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/janitazatawafik.pdf
    • https://cdn.shopify.com/s/files/1/0440/6139/3046/files/jagemimif.pdf
    • https://cdn.shopify.com/s/files/1/0437/9561/1810/files/97363021484.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/kunixinapibesepabu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/jejufejabesujuparixibiwe.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7104/files/mofotodasowejavifoxi.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/
    • https://cdn.shopify.com/s/files/1/0438/4302/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000503c.bin
4d98c3fd376b3a4a69a328a21f675d28ed6b39f87335cd131119ec743e2f1e0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x503C 5568 bytes
font_01_sfnt_off0000631c.bin
2c380427b4abaa546d976e2dd1e485ecc6aa1a5ee262b002d079a9eaabfb4610
pdf-font-stream PDF embedded font (sfnt) at offset 0x631C 9900 bytes