Malicious PDF — malware analysis report

Static analysis result for SHA-256 447244c8f70b2908…

MALICIOUS

PDF

43.6 KB Created: 2020-08-09 23:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed7794c9e0c5c3dea9fea42d5ca96b44 SHA-1: 1fce116dd73dcbc5298e5929ae0bbb501cf3bde8 SHA-256: 447244c8f70b29082110fc216f87b853d86bcdc272ea25d3338a5c0274b68587
154 Risk Score

Malware Insights

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

The PDF document contains embedded links that lead to a redirector service, which in turn points to a Shopify domain hosting a PDF. The primary link, 'https://ttraff.cc/pify?keyword=graphic+design+books+for+beginners+pdf', is flagged as malicious. The document body, though heavily obfuscated, contains text related to graphic design books and the malicious URL, suggesting a lure to trick users into downloading a malicious file. The ML classifier strongly indicates 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/pify?keyword=graphic+design+books+for+beginners+pdf
    • http://files.mairibudreau.com/uploads/1/3/0/7/130776864/ziwawajobigogefivane.pdf
    • http://files.carolholtzmanfregoso.com/uploads/1/3/0/7/130739056/9d58e.pdf
    • http://files.match-gems.com/uploads/1/3/0/9/130969243/waruxe-gibotusupuwe-viputefetapaj-walugogigebomev.pdf
    • http://files.karinridgers.me/uploads/1/3/0/7/130776296/dumurovawufisona.pdf
    • http://files.stadiacatering.com/uploads/1/3/0/7/130776589/legunilukaf_gowit.pdf
    • http://files.mat
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/noron.pdf
    • https://cdn.shopify.com/s/files/1/0430/9381/9541/files/sudulemukizumagadazewuno.pdf
    • https://cdn.shopify.com/s/files/1/0429/0953/2316/files/2879535574.pdf
    • https://cdn.shopify.com/s/files/1/0439/7203/4718/files/82551835924.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/xofolomapurir.pdf
    • https://cdn.shopify.com/s/files/1/0428/6719/6063/files/kuxejolefipapogejofi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/muzut.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0437/files/33203048373.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/employee_contract_letter.pdf
    • https://cdn.shopify.com/s/files/1/0434/4021/0072/files/zimewekasemes.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1362/files/saxon_algebra_2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/5832/1821/files/winoxo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/evangelios_apocrifos_de_la_biblia.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_off00006978.bin
5053f4dab38daa8f4ff068c622df2de98338c55899a6867ca70ba24cf19c3ba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6978 5620 bytes
font_01_sfnt_off00007c8d.bin
53aa1818513d264fb3e48fbfceed7c1b79cca08c812f8c440ec619e4cf4fa0f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8D 10708 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.